Automatic date update in version.in
[binutils-gdb.git] / bfd / elf32-sh.c
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1 /* Renesas / SuperH SH specific support for 32-bit ELF
2 Copyright (C) 1996-2023 Free Software Foundation, Inc.
3 Contributed by Ian Lance Taylor, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
22 #include "sysdep.h"
23 #include "bfd.h"
24 #include "bfdlink.h"
25 #include "libbfd.h"
26 #include "elf-bfd.h"
27 #include "elf-vxworks.h"
28 #include "elf/sh.h"
29 #include "dwarf2.h"
30 #include "libiberty.h"
31 #include "../opcodes/sh-opc.h"
33 /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */
34 #define OCTETS_PER_BYTE(ABFD, SEC) 1
36 static bfd_reloc_status_type sh_elf_reloc
37 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
38 static bfd_reloc_status_type sh_elf_ignore_reloc
39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
40 static bool sh_elf_relax_delete_bytes
41 (bfd *, asection *, bfd_vma, int);
42 static bool sh_elf_align_loads
43 (bfd *, asection *, Elf_Internal_Rela *, bfd_byte *, bool *);
44 static bool sh_elf_swap_insns
45 (bfd *, asection *, void *, bfd_byte *, bfd_vma);
46 static int sh_elf_optimized_tls_reloc
47 (struct bfd_link_info *, int, int);
48 static bfd_vma dtpoff_base
49 (struct bfd_link_info *);
50 static bfd_vma tpoff
51 (struct bfd_link_info *, bfd_vma);
53 /* The name of the dynamic interpreter. This is put in the .interp
54 section. */
56 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
58 /* FDPIC binaries have a default 128K stack. */
59 #define DEFAULT_STACK_SIZE 0x20000
61 #define MINUS_ONE ((bfd_vma) 0 - 1)
63 /* Decide whether a reference to a symbol can be resolved locally or
64 not. If the symbol is protected, we want the local address, but
65 its function descriptor must be assigned by the dynamic linker. */
66 #define SYMBOL_FUNCDESC_LOCAL(INFO, H) \
67 (SYMBOL_REFERENCES_LOCAL (INFO, H) \
68 || ! elf_hash_table (INFO)->dynamic_sections_created)
70 #define SH_PARTIAL32 true
71 #define SH_SRC_MASK32 0xffffffff
72 #define SH_ELF_RELOC sh_elf_reloc
73 static reloc_howto_type sh_elf_howto_table[] =
75 #include "elf32-sh-relocs.h"
78 #define SH_PARTIAL32 false
79 #define SH_SRC_MASK32 0
80 #define SH_ELF_RELOC bfd_elf_generic_reloc
81 static reloc_howto_type sh_vxworks_howto_table[] =
83 #include "elf32-sh-relocs.h"
86 /* Return true if OUTPUT_BFD is a VxWorks object. */
88 static bool
89 vxworks_object_p (bfd *abfd ATTRIBUTE_UNUSED)
91 #if !defined SH_TARGET_ALREADY_DEFINED
92 extern const bfd_target sh_elf32_vxworks_le_vec;
93 extern const bfd_target sh_elf32_vxworks_vec;
95 return (abfd->xvec == &sh_elf32_vxworks_le_vec
96 || abfd->xvec == &sh_elf32_vxworks_vec);
97 #else
98 return false;
99 #endif
102 /* Return true if OUTPUT_BFD is an FDPIC object. */
104 static bool
105 fdpic_object_p (bfd *abfd ATTRIBUTE_UNUSED)
107 #if !defined SH_TARGET_ALREADY_DEFINED
108 extern const bfd_target sh_elf32_fdpic_le_vec;
109 extern const bfd_target sh_elf32_fdpic_be_vec;
111 return (abfd->xvec == &sh_elf32_fdpic_le_vec
112 || abfd->xvec == &sh_elf32_fdpic_be_vec);
113 #else
114 return false;
115 #endif
118 /* Return the howto table for ABFD. */
120 static reloc_howto_type *
121 get_howto_table (bfd *abfd)
123 if (vxworks_object_p (abfd))
124 return sh_vxworks_howto_table;
125 return sh_elf_howto_table;
128 static bfd_reloc_status_type
129 sh_elf_reloc_loop (int r_type ATTRIBUTE_UNUSED, bfd *input_bfd,
130 asection *input_section, bfd_byte *contents,
131 bfd_vma addr, asection *symbol_section,
132 bfd_vma start, bfd_vma end)
134 static bfd_vma last_addr;
135 static asection *last_symbol_section;
136 bfd_byte *start_ptr, *ptr, *last_ptr;
137 int diff, cum_diff;
138 bfd_signed_vma x;
139 int insn;
141 /* Sanity check the address. */
142 if (addr > bfd_get_section_limit (input_bfd, input_section))
143 return bfd_reloc_outofrange;
145 /* We require the start and end relocations to be processed consecutively -
146 although we allow then to be processed forwards or backwards. */
147 if (! last_addr)
149 last_addr = addr;
150 last_symbol_section = symbol_section;
151 return bfd_reloc_ok;
153 if (last_addr != addr)
154 abort ();
155 last_addr = 0;
157 if (! symbol_section || last_symbol_section != symbol_section || end < start)
158 return bfd_reloc_outofrange;
160 /* Get the symbol_section contents. */
161 if (symbol_section != input_section)
163 if (elf_section_data (symbol_section)->this_hdr.contents != NULL)
164 contents = elf_section_data (symbol_section)->this_hdr.contents;
165 else
167 if (!bfd_malloc_and_get_section (input_bfd, symbol_section,
168 &contents))
170 free (contents);
171 return bfd_reloc_outofrange;
175 #define IS_PPI(PTR) ((bfd_get_16 (input_bfd, (PTR)) & 0xfc00) == 0xf800)
176 start_ptr = contents + start;
177 for (cum_diff = -6, ptr = contents + end; cum_diff < 0 && ptr > start_ptr;)
179 for (last_ptr = ptr, ptr -= 4; ptr >= start_ptr && IS_PPI (ptr);)
180 ptr -= 2;
181 ptr += 2;
182 diff = (last_ptr - ptr) >> 1;
183 cum_diff += diff & 1;
184 cum_diff += diff;
186 /* Calculate the start / end values to load into rs / re minus four -
187 so that will cancel out the four we would otherwise have to add to
188 addr to get the value to subtract in order to get relative addressing. */
189 if (cum_diff >= 0)
191 start -= 4;
192 end = (ptr + cum_diff * 2) - contents;
194 else
196 bfd_vma start0 = start - 4;
198 while (start0 && IS_PPI (contents + start0))
199 start0 -= 2;
200 start0 = start - 2 - ((start - start0) & 2);
201 start = start0 - cum_diff - 2;
202 end = start0;
205 if (elf_section_data (symbol_section)->this_hdr.contents != contents)
206 free (contents);
208 insn = bfd_get_16 (input_bfd, contents + addr);
210 x = (insn & 0x200 ? end : start) - addr;
211 if (input_section != symbol_section)
212 x += ((symbol_section->output_section->vma + symbol_section->output_offset)
213 - (input_section->output_section->vma
214 + input_section->output_offset));
215 x >>= 1;
216 if (x < -128 || x > 127)
217 return bfd_reloc_overflow;
219 x = (insn & ~0xff) | (x & 0xff);
220 bfd_put_16 (input_bfd, (bfd_vma) x, contents + addr);
222 return bfd_reloc_ok;
225 /* This function is used for normal relocs. This used to be like the COFF
226 function, and is almost certainly incorrect for other ELF targets. */
228 static bfd_reloc_status_type
229 sh_elf_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol_in,
230 void *data, asection *input_section, bfd *output_bfd,
231 char **error_message ATTRIBUTE_UNUSED)
233 bfd_vma insn;
234 bfd_vma sym_value;
235 enum elf_sh_reloc_type r_type;
236 bfd_vma addr = reloc_entry->address;
237 bfd_size_type octets = addr * OCTETS_PER_BYTE (abfd, input_section);
238 bfd_byte *hit_data = (bfd_byte *) data + octets;
240 r_type = (enum elf_sh_reloc_type) reloc_entry->howto->type;
242 if (output_bfd != NULL)
244 /* Partial linking--do nothing. */
245 reloc_entry->address += input_section->output_offset;
246 return bfd_reloc_ok;
249 /* Almost all relocs have to do with relaxing. If any work must be
250 done for them, it has been done in sh_relax_section. */
251 if (r_type == R_SH_IND12W && (symbol_in->flags & BSF_LOCAL) != 0)
252 return bfd_reloc_ok;
254 if (symbol_in != NULL
255 && bfd_is_und_section (symbol_in->section))
256 return bfd_reloc_undefined;
258 /* PR 17512: file: 9891ca98. */
259 if (octets + bfd_get_reloc_size (reloc_entry->howto)
260 > bfd_get_section_limit_octets (abfd, input_section))
261 return bfd_reloc_outofrange;
263 if (bfd_is_com_section (symbol_in->section))
264 sym_value = 0;
265 else
266 sym_value = (symbol_in->value +
267 symbol_in->section->output_section->vma +
268 symbol_in->section->output_offset);
270 switch (r_type)
272 case R_SH_DIR32:
273 insn = bfd_get_32 (abfd, hit_data);
274 insn += sym_value + reloc_entry->addend;
275 bfd_put_32 (abfd, insn, hit_data);
276 break;
277 case R_SH_IND12W:
278 insn = bfd_get_16 (abfd, hit_data);
279 sym_value += reloc_entry->addend;
280 sym_value -= (input_section->output_section->vma
281 + input_section->output_offset
282 + addr
283 + 4);
284 sym_value += (((insn & 0xfff) ^ 0x800) - 0x800) << 1;
285 insn = (insn & 0xf000) | ((sym_value >> 1) & 0xfff);
286 bfd_put_16 (abfd, insn, hit_data);
287 if (sym_value + 0x1000 >= 0x2000 || (sym_value & 1) != 0)
288 return bfd_reloc_overflow;
289 break;
290 default:
291 abort ();
292 break;
295 return bfd_reloc_ok;
298 /* This function is used for relocs which are only used for relaxing,
299 which the linker should otherwise ignore. */
301 static bfd_reloc_status_type
302 sh_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
303 asymbol *symbol ATTRIBUTE_UNUSED,
304 void *data ATTRIBUTE_UNUSED, asection *input_section,
305 bfd *output_bfd,
306 char **error_message ATTRIBUTE_UNUSED)
308 if (output_bfd != NULL)
309 reloc_entry->address += input_section->output_offset;
310 return bfd_reloc_ok;
313 /* This structure is used to map BFD reloc codes to SH ELF relocs. */
315 struct elf_reloc_map
317 bfd_reloc_code_real_type bfd_reloc_val;
318 unsigned char elf_reloc_val;
321 /* An array mapping BFD reloc codes to SH ELF relocs. */
323 static const struct elf_reloc_map sh_reloc_map[] =
325 { BFD_RELOC_NONE, R_SH_NONE },
326 { BFD_RELOC_32, R_SH_DIR32 },
327 { BFD_RELOC_16, R_SH_DIR16 },
328 { BFD_RELOC_8, R_SH_DIR8 },
329 { BFD_RELOC_CTOR, R_SH_DIR32 },
330 { BFD_RELOC_32_PCREL, R_SH_REL32 },
331 { BFD_RELOC_SH_PCDISP8BY2, R_SH_DIR8WPN },
332 { BFD_RELOC_SH_PCDISP12BY2, R_SH_IND12W },
333 { BFD_RELOC_SH_PCRELIMM8BY2, R_SH_DIR8WPZ },
334 { BFD_RELOC_SH_PCRELIMM8BY4, R_SH_DIR8WPL },
335 { BFD_RELOC_8_PCREL, R_SH_SWITCH8 },
336 { BFD_RELOC_SH_SWITCH16, R_SH_SWITCH16 },
337 { BFD_RELOC_SH_SWITCH32, R_SH_SWITCH32 },
338 { BFD_RELOC_SH_USES, R_SH_USES },
339 { BFD_RELOC_SH_COUNT, R_SH_COUNT },
340 { BFD_RELOC_SH_ALIGN, R_SH_ALIGN },
341 { BFD_RELOC_SH_CODE, R_SH_CODE },
342 { BFD_RELOC_SH_DATA, R_SH_DATA },
343 { BFD_RELOC_SH_LABEL, R_SH_LABEL },
344 { BFD_RELOC_VTABLE_INHERIT, R_SH_GNU_VTINHERIT },
345 { BFD_RELOC_VTABLE_ENTRY, R_SH_GNU_VTENTRY },
346 { BFD_RELOC_SH_LOOP_START, R_SH_LOOP_START },
347 { BFD_RELOC_SH_LOOP_END, R_SH_LOOP_END },
348 { BFD_RELOC_SH_TLS_GD_32, R_SH_TLS_GD_32 },
349 { BFD_RELOC_SH_TLS_LD_32, R_SH_TLS_LD_32 },
350 { BFD_RELOC_SH_TLS_LDO_32, R_SH_TLS_LDO_32 },
351 { BFD_RELOC_SH_TLS_IE_32, R_SH_TLS_IE_32 },
352 { BFD_RELOC_SH_TLS_LE_32, R_SH_TLS_LE_32 },
353 { BFD_RELOC_SH_TLS_DTPMOD32, R_SH_TLS_DTPMOD32 },
354 { BFD_RELOC_SH_TLS_DTPOFF32, R_SH_TLS_DTPOFF32 },
355 { BFD_RELOC_SH_TLS_TPOFF32, R_SH_TLS_TPOFF32 },
356 { BFD_RELOC_32_GOT_PCREL, R_SH_GOT32 },
357 { BFD_RELOC_32_PLT_PCREL, R_SH_PLT32 },
358 { BFD_RELOC_SH_COPY, R_SH_COPY },
359 { BFD_RELOC_SH_GLOB_DAT, R_SH_GLOB_DAT },
360 { BFD_RELOC_SH_JMP_SLOT, R_SH_JMP_SLOT },
361 { BFD_RELOC_SH_RELATIVE, R_SH_RELATIVE },
362 { BFD_RELOC_32_GOTOFF, R_SH_GOTOFF },
363 { BFD_RELOC_SH_GOTPC, R_SH_GOTPC },
364 { BFD_RELOC_SH_GOTPLT32, R_SH_GOTPLT32 },
365 { BFD_RELOC_SH_GOT20, R_SH_GOT20 },
366 { BFD_RELOC_SH_GOTOFF20, R_SH_GOTOFF20 },
367 { BFD_RELOC_SH_GOTFUNCDESC, R_SH_GOTFUNCDESC },
368 { BFD_RELOC_SH_GOTFUNCDESC20, R_SH_GOTFUNCDESC20 },
369 { BFD_RELOC_SH_GOTOFFFUNCDESC, R_SH_GOTOFFFUNCDESC },
370 { BFD_RELOC_SH_GOTOFFFUNCDESC20, R_SH_GOTOFFFUNCDESC20 },
371 { BFD_RELOC_SH_FUNCDESC, R_SH_FUNCDESC },
374 /* Given a BFD reloc code, return the howto structure for the
375 corresponding SH ELF reloc. */
377 static reloc_howto_type *
378 sh_elf_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
380 unsigned int i;
382 for (i = 0; i < sizeof (sh_reloc_map) / sizeof (struct elf_reloc_map); i++)
384 if (sh_reloc_map[i].bfd_reloc_val == code)
385 return get_howto_table (abfd) + (int) sh_reloc_map[i].elf_reloc_val;
388 return NULL;
391 static reloc_howto_type *
392 sh_elf_reloc_name_lookup (bfd *abfd, const char *r_name)
394 unsigned int i;
396 if (vxworks_object_p (abfd))
398 for (i = 0;
399 i < (sizeof (sh_vxworks_howto_table)
400 / sizeof (sh_vxworks_howto_table[0]));
401 i++)
402 if (sh_vxworks_howto_table[i].name != NULL
403 && strcasecmp (sh_vxworks_howto_table[i].name, r_name) == 0)
404 return &sh_vxworks_howto_table[i];
406 else
408 for (i = 0;
409 i < (sizeof (sh_elf_howto_table)
410 / sizeof (sh_elf_howto_table[0]));
411 i++)
412 if (sh_elf_howto_table[i].name != NULL
413 && strcasecmp (sh_elf_howto_table[i].name, r_name) == 0)
414 return &sh_elf_howto_table[i];
417 return NULL;
420 /* Given an ELF reloc, fill in the howto field of a relent. */
422 static bool
423 sh_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
425 unsigned int r;
427 r = ELF32_R_TYPE (dst->r_info);
429 if (r >= R_SH_FIRST_INVALID_RELOC_6
430 || (r >= R_SH_FIRST_INVALID_RELOC && r <= R_SH_LAST_INVALID_RELOC)
431 || (r >= R_SH_FIRST_INVALID_RELOC_2 && r <= R_SH_LAST_INVALID_RELOC_2)
432 || (r >= R_SH_FIRST_INVALID_RELOC_3 && r <= R_SH_LAST_INVALID_RELOC_3)
433 || (r >= R_SH_FIRST_INVALID_RELOC_4 && r <= R_SH_LAST_INVALID_RELOC_4)
434 || (r >= R_SH_FIRST_INVALID_RELOC_5 && r <= R_SH_LAST_INVALID_RELOC_5))
436 /* xgettext:c-format */
437 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
438 abfd, r);
439 bfd_set_error (bfd_error_bad_value);
440 return false;
443 cache_ptr->howto = get_howto_table (abfd) + r;
444 return true;
447 /* This function handles relaxing for SH ELF. See the corresponding
448 function in coff-sh.c for a description of what this does. FIXME:
449 There is a lot of duplication here between this code and the COFF
450 specific code. The format of relocs and symbols is wound deeply
451 into this code, but it would still be better if the duplication
452 could be eliminated somehow. Note in particular that although both
453 functions use symbols like R_SH_CODE, those symbols have different
454 values; in coff-sh.c they come from include/coff/sh.h, whereas here
455 they come from enum elf_sh_reloc_type in include/elf/sh.h. */
457 static bool
458 sh_elf_relax_section (bfd *abfd, asection *sec,
459 struct bfd_link_info *link_info, bool *again)
461 Elf_Internal_Shdr *symtab_hdr;
462 Elf_Internal_Rela *internal_relocs;
463 bool have_code;
464 Elf_Internal_Rela *irel, *irelend;
465 bfd_byte *contents = NULL;
466 Elf_Internal_Sym *isymbuf = NULL;
468 *again = false;
470 if (bfd_link_relocatable (link_info)
471 || (sec->flags & SEC_HAS_CONTENTS) == 0
472 || (sec->flags & SEC_RELOC) == 0
473 || sec->reloc_count == 0)
474 return true;
476 symtab_hdr = &elf_symtab_hdr (abfd);
478 internal_relocs = (_bfd_elf_link_read_relocs
479 (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
480 link_info->keep_memory));
481 if (internal_relocs == NULL)
482 goto error_return;
484 have_code = false;
486 irelend = internal_relocs + sec->reloc_count;
487 for (irel = internal_relocs; irel < irelend; irel++)
489 bfd_vma laddr, paddr, symval;
490 unsigned short insn;
491 Elf_Internal_Rela *irelfn, *irelscan, *irelcount;
492 bfd_signed_vma foff;
494 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_CODE)
495 have_code = true;
497 if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_USES)
498 continue;
500 /* Get the section contents. */
501 if (contents == NULL)
503 if (elf_section_data (sec)->this_hdr.contents != NULL)
504 contents = elf_section_data (sec)->this_hdr.contents;
505 else
507 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
508 goto error_return;
512 /* The r_addend field of the R_SH_USES reloc will point us to
513 the register load. The 4 is because the r_addend field is
514 computed as though it were a jump offset, which are based
515 from 4 bytes after the jump instruction. */
516 laddr = irel->r_offset + 4 + irel->r_addend;
517 if (laddr >= sec->size)
519 /* xgettext:c-format */
520 _bfd_error_handler
521 (_("%pB: %#" PRIx64 ": warning: bad R_SH_USES offset"),
522 abfd, (uint64_t) irel->r_offset);
523 continue;
525 insn = bfd_get_16 (abfd, contents + laddr);
527 /* If the instruction is not mov.l NN,rN, we don't know what to
528 do. */
529 if ((insn & 0xf000) != 0xd000)
531 _bfd_error_handler
532 /* xgettext:c-format */
533 (_("%pB: %#" PRIx64 ": warning: "
534 "R_SH_USES points to unrecognized insn 0x%x"),
535 abfd, (uint64_t) irel->r_offset, insn);
536 continue;
539 /* Get the address from which the register is being loaded. The
540 displacement in the mov.l instruction is quadrupled. It is a
541 displacement from four bytes after the movl instruction, but,
542 before adding in the PC address, two least significant bits
543 of the PC are cleared. We assume that the section is aligned
544 on a four byte boundary. */
545 paddr = insn & 0xff;
546 paddr *= 4;
547 paddr += (laddr + 4) &~ (bfd_vma) 3;
548 if (paddr >= sec->size)
550 _bfd_error_handler
551 /* xgettext:c-format */
552 (_("%pB: %#" PRIx64 ": warning: bad R_SH_USES load offset"),
553 abfd, (uint64_t) irel->r_offset);
554 continue;
557 /* Get the reloc for the address from which the register is
558 being loaded. This reloc will tell us which function is
559 actually being called. */
560 for (irelfn = internal_relocs; irelfn < irelend; irelfn++)
561 if (irelfn->r_offset == paddr
562 && ELF32_R_TYPE (irelfn->r_info) == (int) R_SH_DIR32)
563 break;
564 if (irelfn >= irelend)
566 _bfd_error_handler
567 /* xgettext:c-format */
568 (_("%pB: %#" PRIx64 ": warning: could not find expected reloc"),
569 abfd, (uint64_t) paddr);
570 continue;
573 /* Read this BFD's symbols if we haven't done so already. */
574 if (isymbuf == NULL && symtab_hdr->sh_info != 0)
576 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
577 if (isymbuf == NULL)
578 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
579 symtab_hdr->sh_info, 0,
580 NULL, NULL, NULL);
581 if (isymbuf == NULL)
582 goto error_return;
585 /* Get the value of the symbol referred to by the reloc. */
586 if (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
588 /* A local symbol. */
589 Elf_Internal_Sym *isym;
591 isym = isymbuf + ELF32_R_SYM (irelfn->r_info);
592 if (isym->st_shndx
593 != (unsigned int) _bfd_elf_section_from_bfd_section (abfd, sec))
595 _bfd_error_handler
596 /* xgettext:c-format */
597 (_("%pB: %#" PRIx64 ": warning: symbol in unexpected section"),
598 abfd, (uint64_t) paddr);
599 continue;
602 symval = (isym->st_value
603 + sec->output_section->vma
604 + sec->output_offset);
606 else
608 unsigned long indx;
609 struct elf_link_hash_entry *h;
611 indx = ELF32_R_SYM (irelfn->r_info) - symtab_hdr->sh_info;
612 h = elf_sym_hashes (abfd)[indx];
613 BFD_ASSERT (h != NULL);
614 if (h->root.type != bfd_link_hash_defined
615 && h->root.type != bfd_link_hash_defweak)
617 /* This appears to be a reference to an undefined
618 symbol. Just ignore it--it will be caught by the
619 regular reloc processing. */
620 continue;
623 symval = (h->root.u.def.value
624 + h->root.u.def.section->output_section->vma
625 + h->root.u.def.section->output_offset);
628 if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
629 symval += bfd_get_32 (abfd, contents + paddr);
630 else
631 symval += irelfn->r_addend;
633 /* See if this function call can be shortened. */
634 foff = (symval
635 - (irel->r_offset
636 + sec->output_section->vma
637 + sec->output_offset
638 + 4));
639 /* A branch to an address beyond ours might be increased by an
640 .align that doesn't move when bytes behind us are deleted.
641 So, we add some slop in this calculation to allow for
642 that. */
643 if (foff < -0x1000 || foff >= 0x1000 - 8)
645 /* After all that work, we can't shorten this function call. */
646 continue;
649 /* Shorten the function call. */
651 /* For simplicity of coding, we are going to modify the section
652 contents, the section relocs, and the BFD symbol table. We
653 must tell the rest of the code not to free up this
654 information. It would be possible to instead create a table
655 of changes which have to be made, as is done in coff-mips.c;
656 that would be more work, but would require less memory when
657 the linker is run. */
659 elf_section_data (sec)->relocs = internal_relocs;
660 elf_section_data (sec)->this_hdr.contents = contents;
661 symtab_hdr->contents = (unsigned char *) isymbuf;
663 /* Replace the jmp/jsr with a bra/bsr. */
665 /* Change the R_SH_USES reloc into an R_SH_IND12W reloc, and
666 replace the jmp/jsr with a bra/bsr. */
667 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_SH_IND12W);
668 /* We used to test (ELF32_R_SYM (irelfn->r_info) < symtab_hdr->sh_info)
669 here, but that only checks if the symbol is an external symbol,
670 not if the symbol is in a different section. Besides, we need
671 a consistent meaning for the relocation, so we just assume here that
672 the value of the symbol is not available. */
674 /* We can't fully resolve this yet, because the external
675 symbol value may be changed by future relaxing. We let
676 the final link phase handle it. */
677 if (bfd_get_16 (abfd, contents + irel->r_offset) & 0x0020)
678 bfd_put_16 (abfd, (bfd_vma) 0xa000, contents + irel->r_offset);
679 else
680 bfd_put_16 (abfd, (bfd_vma) 0xb000, contents + irel->r_offset);
682 irel->r_addend = -4;
684 /* When we calculated the symbol "value" we had an offset in the
685 DIR32's word in memory (we read and add it above). However,
686 the jsr we create does NOT have this offset encoded, so we
687 have to add it to the addend to preserve it. */
688 irel->r_addend += bfd_get_32 (abfd, contents + paddr);
690 /* See if there is another R_SH_USES reloc referring to the same
691 register load. */
692 for (irelscan = internal_relocs; irelscan < irelend; irelscan++)
693 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_USES
694 && laddr == irelscan->r_offset + 4 + irelscan->r_addend)
695 break;
696 if (irelscan < irelend)
698 /* Some other function call depends upon this register load,
699 and we have not yet converted that function call.
700 Indeed, we may never be able to convert it. There is
701 nothing else we can do at this point. */
702 continue;
705 /* Look for a R_SH_COUNT reloc on the location where the
706 function address is stored. Do this before deleting any
707 bytes, to avoid confusion about the address. */
708 for (irelcount = internal_relocs; irelcount < irelend; irelcount++)
709 if (irelcount->r_offset == paddr
710 && ELF32_R_TYPE (irelcount->r_info) == (int) R_SH_COUNT)
711 break;
713 /* Delete the register load. */
714 if (! sh_elf_relax_delete_bytes (abfd, sec, laddr, 2))
715 goto error_return;
717 /* That will change things, so, just in case it permits some
718 other function call to come within range, we should relax
719 again. Note that this is not required, and it may be slow. */
720 *again = true;
722 /* Now check whether we got a COUNT reloc. */
723 if (irelcount >= irelend)
725 _bfd_error_handler
726 /* xgettext:c-format */
727 (_("%pB: %#" PRIx64 ": warning: "
728 "could not find expected COUNT reloc"),
729 abfd, (uint64_t) paddr);
730 continue;
733 /* The number of uses is stored in the r_addend field. We've
734 just deleted one. */
735 if (irelcount->r_addend == 0)
737 /* xgettext:c-format */
738 _bfd_error_handler (_("%pB: %#" PRIx64 ": warning: bad count"),
739 abfd, (uint64_t) paddr);
740 continue;
743 --irelcount->r_addend;
745 /* If there are no more uses, we can delete the address. Reload
746 the address from irelfn, in case it was changed by the
747 previous call to sh_elf_relax_delete_bytes. */
748 if (irelcount->r_addend == 0)
750 if (! sh_elf_relax_delete_bytes (abfd, sec, irelfn->r_offset, 4))
751 goto error_return;
754 /* We've done all we can with that function call. */
757 /* Look for load and store instructions that we can align on four
758 byte boundaries. */
759 if ((elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK) != EF_SH4
760 && have_code)
762 bool swapped;
764 /* Get the section contents. */
765 if (contents == NULL)
767 if (elf_section_data (sec)->this_hdr.contents != NULL)
768 contents = elf_section_data (sec)->this_hdr.contents;
769 else
771 if (!bfd_malloc_and_get_section (abfd, sec, &contents))
772 goto error_return;
776 if (! sh_elf_align_loads (abfd, sec, internal_relocs, contents,
777 &swapped))
778 goto error_return;
780 if (swapped)
782 elf_section_data (sec)->relocs = internal_relocs;
783 elf_section_data (sec)->this_hdr.contents = contents;
784 symtab_hdr->contents = (unsigned char *) isymbuf;
788 if (isymbuf != NULL
789 && symtab_hdr->contents != (unsigned char *) isymbuf)
791 if (! link_info->keep_memory)
792 free (isymbuf);
793 else
795 /* Cache the symbols for elf_link_input_bfd. */
796 symtab_hdr->contents = (unsigned char *) isymbuf;
800 if (contents != NULL
801 && elf_section_data (sec)->this_hdr.contents != contents)
803 if (! link_info->keep_memory)
804 free (contents);
805 else
807 /* Cache the section contents for elf_link_input_bfd. */
808 elf_section_data (sec)->this_hdr.contents = contents;
812 if (elf_section_data (sec)->relocs != internal_relocs)
813 free (internal_relocs);
815 return true;
817 error_return:
818 if (symtab_hdr->contents != (unsigned char *) isymbuf)
819 free (isymbuf);
820 if (elf_section_data (sec)->this_hdr.contents != contents)
821 free (contents);
822 if (elf_section_data (sec)->relocs != internal_relocs)
823 free (internal_relocs);
825 return false;
828 /* Delete some bytes from a section while relaxing. FIXME: There is a
829 lot of duplication between this function and sh_relax_delete_bytes
830 in coff-sh.c. */
832 static bool
833 sh_elf_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr,
834 int count)
836 Elf_Internal_Shdr *symtab_hdr;
837 unsigned int sec_shndx;
838 bfd_byte *contents;
839 Elf_Internal_Rela *irel, *irelend;
840 Elf_Internal_Rela *irelalign;
841 bfd_vma toaddr;
842 Elf_Internal_Sym *isymbuf, *isym, *isymend;
843 struct elf_link_hash_entry **sym_hashes;
844 struct elf_link_hash_entry **end_hashes;
845 unsigned int symcount;
846 asection *o;
848 symtab_hdr = &elf_symtab_hdr (abfd);
849 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
851 sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
853 contents = elf_section_data (sec)->this_hdr.contents;
855 /* The deletion must stop at the next ALIGN reloc for an alignment
856 power larger than the number of bytes we are deleting. */
858 irelalign = NULL;
859 toaddr = sec->size;
861 irel = elf_section_data (sec)->relocs;
862 irelend = irel + sec->reloc_count;
863 for (; irel < irelend; irel++)
865 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
866 && irel->r_offset > addr
867 && count < (1 << irel->r_addend))
869 irelalign = irel;
870 toaddr = irel->r_offset;
871 break;
875 /* Actually delete the bytes. */
876 memmove (contents + addr, contents + addr + count,
877 (size_t) (toaddr - addr - count));
878 if (irelalign == NULL)
879 sec->size -= count;
880 else
882 int i;
884 #define NOP_OPCODE (0x0009)
886 BFD_ASSERT ((count & 1) == 0);
887 for (i = 0; i < count; i += 2)
888 bfd_put_16 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i);
891 /* Adjust all the relocs. */
892 for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
894 bfd_vma nraddr, stop;
895 bfd_vma start = 0;
896 int insn = 0;
897 int off, adjust, oinsn;
898 bfd_signed_vma voff = 0;
899 bool overflow;
901 /* Get the new reloc address. */
902 nraddr = irel->r_offset;
903 if ((irel->r_offset > addr
904 && irel->r_offset < toaddr)
905 || (ELF32_R_TYPE (irel->r_info) == (int) R_SH_ALIGN
906 && irel->r_offset == toaddr))
907 nraddr -= count;
909 /* See if this reloc was for the bytes we have deleted, in which
910 case we no longer care about it. Don't delete relocs which
911 represent addresses, though. */
912 if (irel->r_offset >= addr
913 && irel->r_offset < addr + count
914 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_ALIGN
915 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE
916 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_DATA
917 && ELF32_R_TYPE (irel->r_info) != (int) R_SH_LABEL)
918 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
919 (int) R_SH_NONE);
921 /* If this is a PC relative reloc, see if the range it covers
922 includes the bytes we have deleted. */
923 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
925 default:
926 break;
928 case R_SH_DIR8WPN:
929 case R_SH_IND12W:
930 case R_SH_DIR8WPZ:
931 case R_SH_DIR8WPL:
932 start = irel->r_offset;
933 insn = bfd_get_16 (abfd, contents + nraddr);
934 break;
937 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
939 default:
940 start = stop = addr;
941 break;
943 case R_SH_DIR32:
944 /* If this reloc is against a symbol defined in this
945 section, and the symbol will not be adjusted below, we
946 must check the addend to see it will put the value in
947 range to be adjusted, and hence must be changed. */
948 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
950 isym = isymbuf + ELF32_R_SYM (irel->r_info);
951 if (isym->st_shndx == sec_shndx
952 && (isym->st_value <= addr
953 || isym->st_value >= toaddr))
955 bfd_vma val;
957 if (get_howto_table (abfd)[R_SH_DIR32].partial_inplace)
959 val = bfd_get_32 (abfd, contents + nraddr);
960 val += isym->st_value;
961 if (val > addr && val < toaddr)
962 bfd_put_32 (abfd, val - count, contents + nraddr);
964 else
966 val = isym->st_value + irel->r_addend;
967 if (val > addr && val < toaddr)
968 irel->r_addend -= count;
972 start = stop = addr;
973 break;
975 case R_SH_DIR8WPN:
976 off = insn & 0xff;
977 if (off & 0x80)
978 off -= 0x100;
979 stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
980 break;
982 case R_SH_IND12W:
983 off = insn & 0xfff;
984 if (! off)
986 /* This has been made by previous relaxation. Since the
987 relocation will be against an external symbol, the
988 final relocation will just do the right thing. */
989 start = stop = addr;
991 else
993 if (off & 0x800)
994 off -= 0x1000;
995 stop = (bfd_vma) ((bfd_signed_vma) start + 4 + off * 2);
997 /* The addend will be against the section symbol, thus
998 for adjusting the addend, the relevant start is the
999 start of the section.
1000 N.B. If we want to abandon in-place changes here and
1001 test directly using symbol + addend, we have to take into
1002 account that the addend has already been adjusted by -4. */
1003 if (stop > addr && stop < toaddr)
1004 irel->r_addend -= count;
1006 break;
1008 case R_SH_DIR8WPZ:
1009 off = insn & 0xff;
1010 stop = start + 4 + off * 2;
1011 break;
1013 case R_SH_DIR8WPL:
1014 off = insn & 0xff;
1015 stop = (start & ~(bfd_vma) 3) + 4 + off * 4;
1016 break;
1018 case R_SH_SWITCH8:
1019 case R_SH_SWITCH16:
1020 case R_SH_SWITCH32:
1021 /* These relocs types represent
1022 .word L2-L1
1023 The r_addend field holds the difference between the reloc
1024 address and L1. That is the start of the reloc, and
1025 adding in the contents gives us the top. We must adjust
1026 both the r_offset field and the section contents.
1027 N.B. in gas / coff bfd, the elf bfd r_addend is called r_offset,
1028 and the elf bfd r_offset is called r_vaddr. */
1030 stop = irel->r_offset;
1031 start = (bfd_vma) ((bfd_signed_vma) stop - (long) irel->r_addend);
1033 if (start > addr
1034 && start < toaddr
1035 && (stop <= addr || stop >= toaddr))
1036 irel->r_addend += count;
1037 else if (stop > addr
1038 && stop < toaddr
1039 && (start <= addr || start >= toaddr))
1040 irel->r_addend -= count;
1042 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH16)
1043 voff = bfd_get_signed_16 (abfd, contents + nraddr);
1044 else if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_SWITCH8)
1045 voff = bfd_get_8 (abfd, contents + nraddr);
1046 else
1047 voff = bfd_get_signed_32 (abfd, contents + nraddr);
1048 stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1050 break;
1052 case R_SH_USES:
1053 start = irel->r_offset;
1054 stop = (bfd_vma) ((bfd_signed_vma) start
1055 + (long) irel->r_addend
1056 + 4);
1057 break;
1060 if (start > addr
1061 && start < toaddr
1062 && (stop <= addr || stop >= toaddr))
1063 adjust = count;
1064 else if (stop > addr
1065 && stop < toaddr
1066 && (start <= addr || start >= toaddr))
1067 adjust = - count;
1068 else
1069 adjust = 0;
1071 if (adjust != 0)
1073 oinsn = insn;
1074 overflow = false;
1075 switch ((enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info))
1077 default:
1078 abort ();
1079 break;
1081 case R_SH_DIR8WPN:
1082 case R_SH_DIR8WPZ:
1083 insn += adjust / 2;
1084 if ((oinsn & 0xff00) != (insn & 0xff00))
1085 overflow = true;
1086 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1087 break;
1089 case R_SH_IND12W:
1090 insn += adjust / 2;
1091 if ((oinsn & 0xf000) != (insn & 0xf000))
1092 overflow = true;
1093 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1094 break;
1096 case R_SH_DIR8WPL:
1097 BFD_ASSERT (adjust == count || count >= 4);
1098 if (count >= 4)
1099 insn += adjust / 4;
1100 else
1102 if ((irel->r_offset & 3) == 0)
1103 ++insn;
1105 if ((oinsn & 0xff00) != (insn & 0xff00))
1106 overflow = true;
1107 bfd_put_16 (abfd, (bfd_vma) insn, contents + nraddr);
1108 break;
1110 case R_SH_SWITCH8:
1111 voff += adjust;
1112 if (voff < 0 || voff >= 0xff)
1113 overflow = true;
1114 bfd_put_8 (abfd, voff, contents + nraddr);
1115 break;
1117 case R_SH_SWITCH16:
1118 voff += adjust;
1119 if (voff < - 0x8000 || voff >= 0x8000)
1120 overflow = true;
1121 bfd_put_signed_16 (abfd, (bfd_vma) voff, contents + nraddr);
1122 break;
1124 case R_SH_SWITCH32:
1125 voff += adjust;
1126 bfd_put_signed_32 (abfd, (bfd_vma) voff, contents + nraddr);
1127 break;
1129 case R_SH_USES:
1130 irel->r_addend += adjust;
1131 break;
1134 if (overflow)
1136 _bfd_error_handler
1137 /* xgettext:c-format */
1138 (_("%pB: %#" PRIx64 ": fatal: reloc overflow while relaxing"),
1139 abfd, (uint64_t) irel->r_offset);
1140 bfd_set_error (bfd_error_bad_value);
1141 return false;
1145 irel->r_offset = nraddr;
1148 /* Look through all the other sections. If there contain any IMM32
1149 relocs against internal symbols which we are not going to adjust
1150 below, we may need to adjust the addends. */
1151 for (o = abfd->sections; o != NULL; o = o->next)
1153 Elf_Internal_Rela *internal_relocs;
1154 Elf_Internal_Rela *irelscan, *irelscanend;
1155 bfd_byte *ocontents;
1157 if (o == sec
1158 || (o->flags & SEC_HAS_CONTENTS) == 0
1159 || (o->flags & SEC_RELOC) == 0
1160 || o->reloc_count == 0)
1161 continue;
1163 /* We always cache the relocs. Perhaps, if info->keep_memory is
1164 FALSE, we should free them, if we are permitted to, when we
1165 leave sh_coff_relax_section. */
1166 internal_relocs = (_bfd_elf_link_read_relocs
1167 (abfd, o, NULL, (Elf_Internal_Rela *) NULL, true));
1168 if (internal_relocs == NULL)
1169 return false;
1171 ocontents = NULL;
1172 irelscanend = internal_relocs + o->reloc_count;
1173 for (irelscan = internal_relocs; irelscan < irelscanend; irelscan++)
1175 /* Dwarf line numbers use R_SH_SWITCH32 relocs. */
1176 if (ELF32_R_TYPE (irelscan->r_info) == (int) R_SH_SWITCH32)
1178 bfd_vma start, stop;
1179 bfd_signed_vma voff;
1181 if (ocontents == NULL)
1183 if (elf_section_data (o)->this_hdr.contents != NULL)
1184 ocontents = elf_section_data (o)->this_hdr.contents;
1185 else
1187 /* We always cache the section contents.
1188 Perhaps, if info->keep_memory is FALSE, we
1189 should free them, if we are permitted to,
1190 when we leave sh_coff_relax_section. */
1191 if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1193 free (ocontents);
1194 return false;
1197 elf_section_data (o)->this_hdr.contents = ocontents;
1201 stop = irelscan->r_offset;
1202 start
1203 = (bfd_vma) ((bfd_signed_vma) stop - (long) irelscan->r_addend);
1205 /* STOP is in a different section, so it won't change. */
1206 if (start > addr && start < toaddr)
1207 irelscan->r_addend += count;
1209 voff = bfd_get_signed_32 (abfd, ocontents + irelscan->r_offset);
1210 stop = (bfd_vma) ((bfd_signed_vma) start + voff);
1212 if (start > addr
1213 && start < toaddr
1214 && (stop <= addr || stop >= toaddr))
1215 bfd_put_signed_32 (abfd, (bfd_vma) voff + count,
1216 ocontents + irelscan->r_offset);
1217 else if (stop > addr
1218 && stop < toaddr
1219 && (start <= addr || start >= toaddr))
1220 bfd_put_signed_32 (abfd, (bfd_vma) voff - count,
1221 ocontents + irelscan->r_offset);
1224 if (ELF32_R_TYPE (irelscan->r_info) != (int) R_SH_DIR32)
1225 continue;
1227 if (ELF32_R_SYM (irelscan->r_info) >= symtab_hdr->sh_info)
1228 continue;
1231 isym = isymbuf + ELF32_R_SYM (irelscan->r_info);
1232 if (isym->st_shndx == sec_shndx
1233 && (isym->st_value <= addr
1234 || isym->st_value >= toaddr))
1236 bfd_vma val;
1238 if (ocontents == NULL)
1240 if (elf_section_data (o)->this_hdr.contents != NULL)
1241 ocontents = elf_section_data (o)->this_hdr.contents;
1242 else
1244 /* We always cache the section contents.
1245 Perhaps, if info->keep_memory is FALSE, we
1246 should free them, if we are permitted to,
1247 when we leave sh_coff_relax_section. */
1248 if (!bfd_malloc_and_get_section (abfd, o, &ocontents))
1250 free (ocontents);
1251 return false;
1254 elf_section_data (o)->this_hdr.contents = ocontents;
1258 val = bfd_get_32 (abfd, ocontents + irelscan->r_offset);
1259 val += isym->st_value;
1260 if (val > addr && val < toaddr)
1261 bfd_put_32 (abfd, val - count,
1262 ocontents + irelscan->r_offset);
1267 /* Adjust the local symbols defined in this section. */
1268 isymend = isymbuf + symtab_hdr->sh_info;
1269 for (isym = isymbuf; isym < isymend; isym++)
1271 if (isym->st_shndx == sec_shndx
1272 && isym->st_value > addr
1273 && isym->st_value < toaddr)
1274 isym->st_value -= count;
1277 /* Now adjust the global symbols defined in this section. */
1278 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
1279 - symtab_hdr->sh_info);
1280 sym_hashes = elf_sym_hashes (abfd);
1281 end_hashes = sym_hashes + symcount;
1282 for (; sym_hashes < end_hashes; sym_hashes++)
1284 struct elf_link_hash_entry *sym_hash = *sym_hashes;
1285 if ((sym_hash->root.type == bfd_link_hash_defined
1286 || sym_hash->root.type == bfd_link_hash_defweak)
1287 && sym_hash->root.u.def.section == sec
1288 && sym_hash->root.u.def.value > addr
1289 && sym_hash->root.u.def.value < toaddr)
1291 sym_hash->root.u.def.value -= count;
1295 /* See if we can move the ALIGN reloc forward. We have adjusted
1296 r_offset for it already. */
1297 if (irelalign != NULL)
1299 bfd_vma alignto, alignaddr;
1301 alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend);
1302 alignaddr = BFD_ALIGN (irelalign->r_offset,
1303 1 << irelalign->r_addend);
1304 if (alignto != alignaddr)
1306 /* Tail recursion. */
1307 return sh_elf_relax_delete_bytes (abfd, sec, alignaddr,
1308 (int) (alignto - alignaddr));
1312 return true;
1315 /* Look for loads and stores which we can align to four byte
1316 boundaries. This is like sh_align_loads in coff-sh.c. */
1318 static bool
1319 sh_elf_align_loads (bfd *abfd ATTRIBUTE_UNUSED, asection *sec,
1320 Elf_Internal_Rela *internal_relocs,
1321 bfd_byte *contents ATTRIBUTE_UNUSED,
1322 bool *pswapped)
1324 Elf_Internal_Rela *irel, *irelend;
1325 bfd_vma *labels = NULL;
1326 bfd_vma *label, *label_end;
1327 bfd_size_type amt;
1329 *pswapped = false;
1331 irelend = internal_relocs + sec->reloc_count;
1333 /* Get all the addresses with labels on them. */
1334 amt = sec->reloc_count;
1335 amt *= sizeof (bfd_vma);
1336 labels = (bfd_vma *) bfd_malloc (amt);
1337 if (labels == NULL)
1338 goto error_return;
1339 label_end = labels;
1340 for (irel = internal_relocs; irel < irelend; irel++)
1342 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_LABEL)
1344 *label_end = irel->r_offset;
1345 ++label_end;
1349 /* Note that the assembler currently always outputs relocs in
1350 address order. If that ever changes, this code will need to sort
1351 the label values and the relocs. */
1353 label = labels;
1355 for (irel = internal_relocs; irel < irelend; irel++)
1357 bfd_vma start, stop;
1359 if (ELF32_R_TYPE (irel->r_info) != (int) R_SH_CODE)
1360 continue;
1362 start = irel->r_offset;
1364 for (irel++; irel < irelend; irel++)
1365 if (ELF32_R_TYPE (irel->r_info) == (int) R_SH_DATA)
1366 break;
1367 if (irel < irelend)
1368 stop = irel->r_offset;
1369 else
1370 stop = sec->size;
1372 if (! _bfd_sh_align_load_span (abfd, sec, contents, sh_elf_swap_insns,
1373 internal_relocs, &label,
1374 label_end, start, stop, pswapped))
1375 goto error_return;
1378 free (labels);
1380 return true;
1382 error_return:
1383 free (labels);
1384 return false;
1387 /* Swap two SH instructions. This is like sh_swap_insns in coff-sh.c. */
1389 static bool
1390 sh_elf_swap_insns (bfd *abfd, asection *sec, void *relocs,
1391 bfd_byte *contents, bfd_vma addr)
1393 Elf_Internal_Rela *internal_relocs = (Elf_Internal_Rela *) relocs;
1394 unsigned short i1, i2;
1395 Elf_Internal_Rela *irel, *irelend;
1397 /* Swap the instructions themselves. */
1398 i1 = bfd_get_16 (abfd, contents + addr);
1399 i2 = bfd_get_16 (abfd, contents + addr + 2);
1400 bfd_put_16 (abfd, (bfd_vma) i2, contents + addr);
1401 bfd_put_16 (abfd, (bfd_vma) i1, contents + addr + 2);
1403 /* Adjust all reloc addresses. */
1404 irelend = internal_relocs + sec->reloc_count;
1405 for (irel = internal_relocs; irel < irelend; irel++)
1407 enum elf_sh_reloc_type type;
1408 int add;
1410 /* There are a few special types of relocs that we don't want to
1411 adjust. These relocs do not apply to the instruction itself,
1412 but are only associated with the address. */
1413 type = (enum elf_sh_reloc_type) ELF32_R_TYPE (irel->r_info);
1414 if (type == R_SH_ALIGN
1415 || type == R_SH_CODE
1416 || type == R_SH_DATA
1417 || type == R_SH_LABEL)
1418 continue;
1420 /* If an R_SH_USES reloc points to one of the addresses being
1421 swapped, we must adjust it. It would be incorrect to do this
1422 for a jump, though, since we want to execute both
1423 instructions after the jump. (We have avoided swapping
1424 around a label, so the jump will not wind up executing an
1425 instruction it shouldn't). */
1426 if (type == R_SH_USES)
1428 bfd_vma off;
1430 off = irel->r_offset + 4 + irel->r_addend;
1431 if (off == addr)
1432 irel->r_offset += 2;
1433 else if (off == addr + 2)
1434 irel->r_offset -= 2;
1437 if (irel->r_offset == addr)
1439 irel->r_offset += 2;
1440 add = -2;
1442 else if (irel->r_offset == addr + 2)
1444 irel->r_offset -= 2;
1445 add = 2;
1447 else
1448 add = 0;
1450 if (add != 0)
1452 bfd_byte *loc;
1453 unsigned short insn, oinsn;
1454 bool overflow;
1456 loc = contents + irel->r_offset;
1457 overflow = false;
1458 switch (type)
1460 default:
1461 break;
1463 case R_SH_DIR8WPN:
1464 case R_SH_DIR8WPZ:
1465 insn = bfd_get_16 (abfd, loc);
1466 oinsn = insn;
1467 insn += add / 2;
1468 if ((oinsn & 0xff00) != (insn & 0xff00))
1469 overflow = true;
1470 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1471 break;
1473 case R_SH_IND12W:
1474 insn = bfd_get_16 (abfd, loc);
1475 oinsn = insn;
1476 insn += add / 2;
1477 if ((oinsn & 0xf000) != (insn & 0xf000))
1478 overflow = true;
1479 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1480 break;
1482 case R_SH_DIR8WPL:
1483 /* This reloc ignores the least significant 3 bits of
1484 the program counter before adding in the offset.
1485 This means that if ADDR is at an even address, the
1486 swap will not affect the offset. If ADDR is an at an
1487 odd address, then the instruction will be crossing a
1488 four byte boundary, and must be adjusted. */
1489 if ((addr & 3) != 0)
1491 insn = bfd_get_16 (abfd, loc);
1492 oinsn = insn;
1493 insn += add / 2;
1494 if ((oinsn & 0xff00) != (insn & 0xff00))
1495 overflow = true;
1496 bfd_put_16 (abfd, (bfd_vma) insn, loc);
1499 break;
1502 if (overflow)
1504 _bfd_error_handler
1505 /* xgettext:c-format */
1506 (_("%pB: %#" PRIx64 ": fatal: reloc overflow while relaxing"),
1507 abfd, (uint64_t) irel->r_offset);
1508 bfd_set_error (bfd_error_bad_value);
1509 return false;
1514 return true;
1517 /* Describes one of the various PLT styles. */
1519 struct elf_sh_plt_info
1521 /* The template for the first PLT entry, or NULL if there is no special
1522 first entry. */
1523 const bfd_byte *plt0_entry;
1525 /* The size of PLT0_ENTRY in bytes, or 0 if PLT0_ENTRY is NULL. */
1526 bfd_vma plt0_entry_size;
1528 /* Index I is the offset into PLT0_ENTRY of a pointer to
1529 _GLOBAL_OFFSET_TABLE_ + I * 4. The value is MINUS_ONE
1530 if there is no such pointer. */
1531 bfd_vma plt0_got_fields[3];
1533 /* The template for a symbol's PLT entry. */
1534 const bfd_byte *symbol_entry;
1536 /* The size of SYMBOL_ENTRY in bytes. */
1537 bfd_vma symbol_entry_size;
1539 /* Byte offsets of fields in SYMBOL_ENTRY. Not all fields are used
1540 on all targets. The comments by each member indicate the value
1541 that the field must hold. */
1542 struct {
1543 bfd_vma got_entry; /* the address of the symbol's .got.plt entry */
1544 bfd_vma plt; /* .plt (or a branch to .plt on VxWorks) */
1545 bfd_vma reloc_offset; /* the offset of the symbol's JMP_SLOT reloc */
1546 bool got20; /* TRUE if got_entry points to a movi20 instruction
1547 (instead of a constant pool entry). */
1548 } symbol_fields;
1550 /* The offset of the resolver stub from the start of SYMBOL_ENTRY. */
1551 bfd_vma symbol_resolve_offset;
1553 /* A different PLT layout which can be used for the first
1554 MAX_SHORT_PLT entries. It must share the same plt0. NULL in
1555 other cases. */
1556 const struct elf_sh_plt_info *short_plt;
1559 /* The size in bytes of an entry in the procedure linkage table. */
1561 #define ELF_PLT_ENTRY_SIZE 28
1563 /* First entry in an absolute procedure linkage table look like this. */
1565 /* Note - this code has been "optimised" not to use r2. r2 is used by
1566 GCC to return the address of large structures, so it should not be
1567 corrupted here. This does mean however, that this PLT does not conform
1568 to the SH PIC ABI. That spec says that r0 contains the type of the PLT
1569 and r2 contains the GOT id. This version stores the GOT id in r0 and
1570 ignores the type. Loaders can easily detect this difference however,
1571 since the type will always be 0 or 8, and the GOT ids will always be
1572 greater than or equal to 12. */
1573 static const bfd_byte elf_sh_plt0_entry_be[ELF_PLT_ENTRY_SIZE] =
1575 0xd0, 0x05, /* mov.l 2f,r0 */
1576 0x60, 0x02, /* mov.l @r0,r0 */
1577 0x2f, 0x06, /* mov.l r0,@-r15 */
1578 0xd0, 0x03, /* mov.l 1f,r0 */
1579 0x60, 0x02, /* mov.l @r0,r0 */
1580 0x40, 0x2b, /* jmp @r0 */
1581 0x60, 0xf6, /* mov.l @r15+,r0 */
1582 0x00, 0x09, /* nop */
1583 0x00, 0x09, /* nop */
1584 0x00, 0x09, /* nop */
1585 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1586 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1589 static const bfd_byte elf_sh_plt0_entry_le[ELF_PLT_ENTRY_SIZE] =
1591 0x05, 0xd0, /* mov.l 2f,r0 */
1592 0x02, 0x60, /* mov.l @r0,r0 */
1593 0x06, 0x2f, /* mov.l r0,@-r15 */
1594 0x03, 0xd0, /* mov.l 1f,r0 */
1595 0x02, 0x60, /* mov.l @r0,r0 */
1596 0x2b, 0x40, /* jmp @r0 */
1597 0xf6, 0x60, /* mov.l @r15+,r0 */
1598 0x09, 0x00, /* nop */
1599 0x09, 0x00, /* nop */
1600 0x09, 0x00, /* nop */
1601 0, 0, 0, 0, /* 1: replaced with address of .got.plt + 8. */
1602 0, 0, 0, 0, /* 2: replaced with address of .got.plt + 4. */
1605 /* Sebsequent entries in an absolute procedure linkage table look like
1606 this. */
1608 static const bfd_byte elf_sh_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1610 0xd0, 0x04, /* mov.l 1f,r0 */
1611 0x60, 0x02, /* mov.l @(r0,r12),r0 */
1612 0xd1, 0x02, /* mov.l 0f,r1 */
1613 0x40, 0x2b, /* jmp @r0 */
1614 0x60, 0x13, /* mov r1,r0 */
1615 0xd1, 0x03, /* mov.l 2f,r1 */
1616 0x40, 0x2b, /* jmp @r0 */
1617 0x00, 0x09, /* nop */
1618 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1619 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1620 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1623 static const bfd_byte elf_sh_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1625 0x04, 0xd0, /* mov.l 1f,r0 */
1626 0x02, 0x60, /* mov.l @r0,r0 */
1627 0x02, 0xd1, /* mov.l 0f,r1 */
1628 0x2b, 0x40, /* jmp @r0 */
1629 0x13, 0x60, /* mov r1,r0 */
1630 0x03, 0xd1, /* mov.l 2f,r1 */
1631 0x2b, 0x40, /* jmp @r0 */
1632 0x09, 0x00, /* nop */
1633 0, 0, 0, 0, /* 0: replaced with address of .PLT0. */
1634 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1635 0, 0, 0, 0, /* 2: replaced with offset into relocation table. */
1638 /* Entries in a PIC procedure linkage table look like this. */
1640 static const bfd_byte elf_sh_pic_plt_entry_be[ELF_PLT_ENTRY_SIZE] =
1642 0xd0, 0x04, /* mov.l 1f,r0 */
1643 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1644 0x40, 0x2b, /* jmp @r0 */
1645 0x00, 0x09, /* nop */
1646 0x50, 0xc2, /* mov.l @(8,r12),r0 */
1647 0xd1, 0x03, /* mov.l 2f,r1 */
1648 0x40, 0x2b, /* jmp @r0 */
1649 0x50, 0xc1, /* mov.l @(4,r12),r0 */
1650 0x00, 0x09, /* nop */
1651 0x00, 0x09, /* nop */
1652 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1653 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1656 static const bfd_byte elf_sh_pic_plt_entry_le[ELF_PLT_ENTRY_SIZE] =
1658 0x04, 0xd0, /* mov.l 1f,r0 */
1659 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1660 0x2b, 0x40, /* jmp @r0 */
1661 0x09, 0x00, /* nop */
1662 0xc2, 0x50, /* mov.l @(8,r12),r0 */
1663 0x03, 0xd1, /* mov.l 2f,r1 */
1664 0x2b, 0x40, /* jmp @r0 */
1665 0xc1, 0x50, /* mov.l @(4,r12),r0 */
1666 0x09, 0x00, /* nop */
1667 0x09, 0x00, /* nop */
1668 0, 0, 0, 0, /* 1: replaced with address of this symbol in .got. */
1669 0, 0, 0, 0 /* 2: replaced with offset into relocation table. */
1672 static const struct elf_sh_plt_info elf_sh_plts[2][2] = {
1675 /* Big-endian non-PIC. */
1676 elf_sh_plt0_entry_be,
1677 ELF_PLT_ENTRY_SIZE,
1678 { MINUS_ONE, 24, 20 },
1679 elf_sh_plt_entry_be,
1680 ELF_PLT_ENTRY_SIZE,
1681 { 20, 16, 24, false },
1683 NULL
1686 /* Little-endian non-PIC. */
1687 elf_sh_plt0_entry_le,
1688 ELF_PLT_ENTRY_SIZE,
1689 { MINUS_ONE, 24, 20 },
1690 elf_sh_plt_entry_le,
1691 ELF_PLT_ENTRY_SIZE,
1692 { 20, 16, 24, false },
1694 NULL
1699 /* Big-endian PIC. */
1700 elf_sh_plt0_entry_be,
1701 ELF_PLT_ENTRY_SIZE,
1702 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1703 elf_sh_pic_plt_entry_be,
1704 ELF_PLT_ENTRY_SIZE,
1705 { 20, MINUS_ONE, 24, false },
1707 NULL
1710 /* Little-endian PIC. */
1711 elf_sh_plt0_entry_le,
1712 ELF_PLT_ENTRY_SIZE,
1713 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1714 elf_sh_pic_plt_entry_le,
1715 ELF_PLT_ENTRY_SIZE,
1716 { 20, MINUS_ONE, 24, false },
1718 NULL
1723 #define VXWORKS_PLT_HEADER_SIZE 12
1724 #define VXWORKS_PLT_ENTRY_SIZE 24
1726 static const bfd_byte vxworks_sh_plt0_entry_be[VXWORKS_PLT_HEADER_SIZE] =
1728 0xd1, 0x01, /* mov.l @(8,pc),r1 */
1729 0x61, 0x12, /* mov.l @r1,r1 */
1730 0x41, 0x2b, /* jmp @r1 */
1731 0x00, 0x09, /* nop */
1732 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1735 static const bfd_byte vxworks_sh_plt0_entry_le[VXWORKS_PLT_HEADER_SIZE] =
1737 0x01, 0xd1, /* mov.l @(8,pc),r1 */
1738 0x12, 0x61, /* mov.l @r1,r1 */
1739 0x2b, 0x41, /* jmp @r1 */
1740 0x09, 0x00, /* nop */
1741 0, 0, 0, 0 /* 0: replaced with _GLOBAL_OFFSET_TABLE+8. */
1744 static const bfd_byte vxworks_sh_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1746 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1747 0x60, 0x02, /* mov.l @r0,r0 */
1748 0x40, 0x2b, /* jmp @r0 */
1749 0x00, 0x09, /* nop */
1750 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1751 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1752 0xa0, 0x00, /* bra PLT (We need to fix the offset.) */
1753 0x00, 0x09, /* nop */
1754 0x00, 0x09, /* nop */
1755 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1758 static const bfd_byte vxworks_sh_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1760 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1761 0x02, 0x60, /* mov.l @r0,r0 */
1762 0x2b, 0x40, /* jmp @r0 */
1763 0x09, 0x00, /* nop */
1764 0, 0, 0, 0, /* 0: replaced with address of this symbol in .got. */
1765 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1766 0x00, 0xa0, /* bra PLT (We need to fix the offset.) */
1767 0x09, 0x00, /* nop */
1768 0x09, 0x00, /* nop */
1769 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1772 static const bfd_byte vxworks_sh_pic_plt_entry_be[VXWORKS_PLT_ENTRY_SIZE] =
1774 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1775 0x00, 0xce, /* mov.l @(r0,r12),r0 */
1776 0x40, 0x2b, /* jmp @r0 */
1777 0x00, 0x09, /* nop */
1778 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1779 0xd0, 0x01, /* mov.l @(8,pc),r0 */
1780 0x51, 0xc2, /* mov.l @(8,r12),r1 */
1781 0x41, 0x2b, /* jmp @r1 */
1782 0x00, 0x09, /* nop */
1783 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1786 static const bfd_byte vxworks_sh_pic_plt_entry_le[VXWORKS_PLT_ENTRY_SIZE] =
1788 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1789 0xce, 0x00, /* mov.l @(r0,r12),r0 */
1790 0x2b, 0x40, /* jmp @r0 */
1791 0x09, 0x00, /* nop */
1792 0, 0, 0, 0, /* 0: replaced with offset of this symbol in .got. */
1793 0x01, 0xd0, /* mov.l @(8,pc),r0 */
1794 0xc2, 0x51, /* mov.l @(8,r12),r1 */
1795 0x2b, 0x41, /* jmp @r1 */
1796 0x09, 0x00, /* nop */
1797 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1800 static const struct elf_sh_plt_info vxworks_sh_plts[2][2] = {
1803 /* Big-endian non-PIC. */
1804 vxworks_sh_plt0_entry_be,
1805 VXWORKS_PLT_HEADER_SIZE,
1806 { MINUS_ONE, MINUS_ONE, 8 },
1807 vxworks_sh_plt_entry_be,
1808 VXWORKS_PLT_ENTRY_SIZE,
1809 { 8, 14, 20, false },
1811 NULL
1814 /* Little-endian non-PIC. */
1815 vxworks_sh_plt0_entry_le,
1816 VXWORKS_PLT_HEADER_SIZE,
1817 { MINUS_ONE, MINUS_ONE, 8 },
1818 vxworks_sh_plt_entry_le,
1819 VXWORKS_PLT_ENTRY_SIZE,
1820 { 8, 14, 20, false },
1822 NULL
1827 /* Big-endian PIC. */
1828 NULL,
1830 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1831 vxworks_sh_pic_plt_entry_be,
1832 VXWORKS_PLT_ENTRY_SIZE,
1833 { 8, MINUS_ONE, 20, false },
1835 NULL
1838 /* Little-endian PIC. */
1839 NULL,
1841 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1842 vxworks_sh_pic_plt_entry_le,
1843 VXWORKS_PLT_ENTRY_SIZE,
1844 { 8, MINUS_ONE, 20, false },
1846 NULL
1851 /* FDPIC PLT entries. Two unimplemented optimizations for lazy
1852 binding are to omit the lazy binding stub when linking with -z now
1853 and to move lazy binding stubs into a separate region for better
1854 cache behavior. */
1856 #define FDPIC_PLT_ENTRY_SIZE 28
1857 #define FDPIC_PLT_LAZY_OFFSET 20
1859 /* FIXME: The lazy binding stub requires a plt0 - which may need to be
1860 duplicated if it is out of range, or which can be inlined. So
1861 right now it is always inlined, which wastes a word per stub. It
1862 might be easier to handle the duplication if we put the lazy
1863 stubs separately. */
1865 static const bfd_byte fdpic_sh_plt_entry_be[FDPIC_PLT_ENTRY_SIZE] =
1867 0xd0, 0x02, /* mov.l @(12,pc),r0 */
1868 0x01, 0xce, /* mov.l @(r0,r12),r1 */
1869 0x70, 0x04, /* add #4, r0 */
1870 0x41, 0x2b, /* jmp @r1 */
1871 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
1872 0x00, 0x09, /* nop */
1873 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
1874 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1875 0x60, 0xc2, /* mov.l @r12,r0 */
1876 0x40, 0x2b, /* jmp @r0 */
1877 0x53, 0xc1, /* mov.l @(4,r12),r3 */
1878 0x00, 0x09, /* nop */
1881 static const bfd_byte fdpic_sh_plt_entry_le[FDPIC_PLT_ENTRY_SIZE] =
1883 0x02, 0xd0, /* mov.l @(12,pc),r0 */
1884 0xce, 0x01, /* mov.l @(r0,r12),r1 */
1885 0x04, 0x70, /* add #4, r0 */
1886 0x2b, 0x41, /* jmp @r1 */
1887 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
1888 0x09, 0x00, /* nop */
1889 0, 0, 0, 0, /* 0: replaced with offset of this symbol's funcdesc */
1890 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1891 0xc2, 0x60, /* mov.l @r12,r0 */
1892 0x2b, 0x40, /* jmp @r0 */
1893 0xc1, 0x53, /* mov.l @(4,r12),r3 */
1894 0x09, 0x00, /* nop */
1897 static const struct elf_sh_plt_info fdpic_sh_plts[2] = {
1899 /* Big-endian PIC. */
1900 NULL,
1902 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1903 fdpic_sh_plt_entry_be,
1904 FDPIC_PLT_ENTRY_SIZE,
1905 { 12, MINUS_ONE, 16, false },
1906 FDPIC_PLT_LAZY_OFFSET,
1907 NULL
1910 /* Little-endian PIC. */
1911 NULL,
1913 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1914 fdpic_sh_plt_entry_le,
1915 FDPIC_PLT_ENTRY_SIZE,
1916 { 12, MINUS_ONE, 16, false },
1917 FDPIC_PLT_LAZY_OFFSET,
1918 NULL
1922 /* On SH2A, we can use the movi20 instruction to generate shorter PLT
1923 entries for the first 64K slots. We use the normal FDPIC PLT entry
1924 past that point; we could also use movi20s, which might be faster,
1925 but would not be any smaller. */
1927 #define FDPIC_SH2A_PLT_ENTRY_SIZE 24
1928 #define FDPIC_SH2A_PLT_LAZY_OFFSET 16
1930 static const bfd_byte fdpic_sh2a_plt_entry_be[FDPIC_SH2A_PLT_ENTRY_SIZE] =
1932 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
1933 0x01, 0xce, /* mov.l @(r0,r12),r1 */
1934 0x70, 0x04, /* add #4, r0 */
1935 0x41, 0x2b, /* jmp @r1 */
1936 0x0c, 0xce, /* mov.l @(r0,r12),r12 */
1937 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1938 0x60, 0xc2, /* mov.l @r12,r0 */
1939 0x40, 0x2b, /* jmp @r0 */
1940 0x53, 0xc1, /* mov.l @(4,r12),r3 */
1941 0x00, 0x09, /* nop */
1944 static const bfd_byte fdpic_sh2a_plt_entry_le[FDPIC_SH2A_PLT_ENTRY_SIZE] =
1946 0, 0, 0, 0, /* movi20 #gotofffuncdesc,r0 */
1947 0xce, 0x01, /* mov.l @(r0,r12),r1 */
1948 0x04, 0x70, /* add #4, r0 */
1949 0x2b, 0x41, /* jmp @r1 */
1950 0xce, 0x0c, /* mov.l @(r0,r12),r12 */
1951 0, 0, 0, 0, /* 1: replaced with offset into relocation table. */
1952 0xc2, 0x60, /* mov.l @r12,r0 */
1953 0x2b, 0x40, /* jmp @r0 */
1954 0xc1, 0x53, /* mov.l @(4,r12),r3 */
1955 0x09, 0x00, /* nop */
1958 static const struct elf_sh_plt_info fdpic_sh2a_short_plt_be = {
1959 /* Big-endian FDPIC, max index 64K. */
1960 NULL,
1962 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1963 fdpic_sh2a_plt_entry_be,
1964 FDPIC_SH2A_PLT_ENTRY_SIZE,
1965 { 0, MINUS_ONE, 12, true },
1966 FDPIC_SH2A_PLT_LAZY_OFFSET,
1967 NULL
1970 static const struct elf_sh_plt_info fdpic_sh2a_short_plt_le = {
1971 /* Little-endian FDPIC, max index 64K. */
1972 NULL,
1974 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1975 fdpic_sh2a_plt_entry_le,
1976 FDPIC_SH2A_PLT_ENTRY_SIZE,
1977 { 0, MINUS_ONE, 12, true },
1978 FDPIC_SH2A_PLT_LAZY_OFFSET,
1979 NULL
1982 static const struct elf_sh_plt_info fdpic_sh2a_plts[2] = {
1984 /* Big-endian PIC. */
1985 NULL,
1987 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1988 fdpic_sh_plt_entry_be,
1989 FDPIC_PLT_ENTRY_SIZE,
1990 { 12, MINUS_ONE, 16, false },
1991 FDPIC_PLT_LAZY_OFFSET,
1992 &fdpic_sh2a_short_plt_be
1995 /* Little-endian PIC. */
1996 NULL,
1998 { MINUS_ONE, MINUS_ONE, MINUS_ONE },
1999 fdpic_sh_plt_entry_le,
2000 FDPIC_PLT_ENTRY_SIZE,
2001 { 12, MINUS_ONE, 16, false },
2002 FDPIC_PLT_LAZY_OFFSET,
2003 &fdpic_sh2a_short_plt_le
2007 /* Return the type of PLT associated with ABFD. PIC_P is true if
2008 the object is position-independent. */
2010 static const struct elf_sh_plt_info *
2011 get_plt_info (bfd *abfd, bool pic_p)
2013 if (fdpic_object_p (abfd))
2015 /* If any input file requires SH2A we can use a shorter PLT
2016 sequence. */
2017 if (sh_get_arch_from_bfd_mach (bfd_get_mach (abfd)) & arch_sh2a_base)
2018 return &fdpic_sh2a_plts[!bfd_big_endian (abfd)];
2019 else
2020 return &fdpic_sh_plts[!bfd_big_endian (abfd)];
2022 if (vxworks_object_p (abfd))
2023 return &vxworks_sh_plts[pic_p][!bfd_big_endian (abfd)];
2024 return &elf_sh_plts[pic_p][!bfd_big_endian (abfd)];
2027 /* Install a 32-bit PLT field starting at ADDR, which occurs in OUTPUT_BFD.
2028 VALUE is the field's value and CODE_P is true if VALUE refers to code,
2029 not data. */
2031 inline static void
2032 install_plt_field (bfd *output_bfd, bool code_p ATTRIBUTE_UNUSED,
2033 unsigned long value, bfd_byte *addr)
2035 bfd_put_32 (output_bfd, value, addr);
2038 /* The number of PLT entries which can use a shorter PLT, if any.
2039 Currently always 64K, since only SH-2A FDPIC uses this; a
2040 20-bit movi20 can address that many function descriptors below
2041 _GLOBAL_OFFSET_TABLE_. */
2042 #define MAX_SHORT_PLT 65536
2044 /* Return the index of the PLT entry at byte offset OFFSET. */
2046 static bfd_vma
2047 get_plt_index (const struct elf_sh_plt_info *info, bfd_vma offset)
2049 bfd_vma plt_index = 0;
2051 offset -= info->plt0_entry_size;
2052 if (info->short_plt != NULL)
2054 if (offset > MAX_SHORT_PLT * info->short_plt->symbol_entry_size)
2056 plt_index = MAX_SHORT_PLT;
2057 offset -= MAX_SHORT_PLT * info->short_plt->symbol_entry_size;
2059 else
2060 info = info->short_plt;
2062 return plt_index + offset / info->symbol_entry_size;
2065 /* Do the inverse operation. */
2067 static bfd_vma
2068 get_plt_offset (const struct elf_sh_plt_info *info, bfd_vma plt_index)
2070 bfd_vma offset = 0;
2072 if (info->short_plt != NULL)
2074 if (plt_index > MAX_SHORT_PLT)
2076 offset = MAX_SHORT_PLT * info->short_plt->symbol_entry_size;
2077 plt_index -= MAX_SHORT_PLT;
2079 else
2080 info = info->short_plt;
2082 return (offset + info->plt0_entry_size
2083 + (plt_index * info->symbol_entry_size));
2086 union gotref
2088 bfd_signed_vma refcount;
2089 bfd_vma offset;
2092 /* sh ELF linker hash entry. */
2094 struct elf_sh_link_hash_entry
2096 struct elf_link_hash_entry root;
2098 bfd_signed_vma gotplt_refcount;
2100 /* A local function descriptor, for FDPIC. The refcount counts
2101 R_SH_FUNCDESC, R_SH_GOTOFFFUNCDESC, and R_SH_GOTOFFFUNCDESC20
2102 relocations; the PLT and GOT entry are accounted
2103 for separately. After adjust_dynamic_symbol, the offset is
2104 MINUS_ONE if there is no local descriptor (dynamic linker
2105 managed and no PLT entry, or undefined weak non-dynamic).
2106 During check_relocs we do not yet know whether the local
2107 descriptor will be canonical. */
2108 union gotref funcdesc;
2110 /* How many of the above refcounted relocations were R_SH_FUNCDESC,
2111 and thus require fixups or relocations. */
2112 bfd_signed_vma abs_funcdesc_refcount;
2114 enum got_type {
2115 GOT_UNKNOWN = 0, GOT_NORMAL, GOT_TLS_GD, GOT_TLS_IE, GOT_FUNCDESC
2116 } got_type;
2119 #define sh_elf_hash_entry(ent) ((struct elf_sh_link_hash_entry *)(ent))
2121 struct sh_elf_obj_tdata
2123 struct elf_obj_tdata root;
2125 /* got_type for each local got entry. */
2126 char *local_got_type;
2128 /* Function descriptor refcount and offset for each local symbol. */
2129 union gotref *local_funcdesc;
2132 #define sh_elf_tdata(abfd) \
2133 ((struct sh_elf_obj_tdata *) (abfd)->tdata.any)
2135 #define sh_elf_local_got_type(abfd) \
2136 (sh_elf_tdata (abfd)->local_got_type)
2138 #define sh_elf_local_funcdesc(abfd) \
2139 (sh_elf_tdata (abfd)->local_funcdesc)
2141 #define is_sh_elf(bfd) \
2142 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2143 && elf_tdata (bfd) != NULL \
2144 && elf_object_id (bfd) == SH_ELF_DATA)
2146 /* Override the generic function because we need to store sh_elf_obj_tdata
2147 as the specific tdata. */
2149 static bool
2150 sh_elf_mkobject (bfd *abfd)
2152 return bfd_elf_allocate_object (abfd, sizeof (struct sh_elf_obj_tdata),
2153 SH_ELF_DATA);
2156 /* sh ELF linker hash table. */
2158 struct elf_sh_link_hash_table
2160 struct elf_link_hash_table root;
2162 /* Short-cuts to get to dynamic linker sections. */
2163 asection *sfuncdesc;
2164 asection *srelfuncdesc;
2165 asection *srofixup;
2167 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2168 asection *srelplt2;
2170 /* A counter or offset to track a TLS got entry. */
2171 union
2173 bfd_signed_vma refcount;
2174 bfd_vma offset;
2175 } tls_ldm_got;
2177 /* The type of PLT to use. */
2178 const struct elf_sh_plt_info *plt_info;
2180 /* True if the target system uses FDPIC. */
2181 bool fdpic_p;
2184 /* Traverse an sh ELF linker hash table. */
2186 #define sh_elf_link_hash_traverse(table, func, info) \
2187 (elf_link_hash_traverse \
2188 (&(table)->root, \
2189 (bool (*) (struct elf_link_hash_entry *, void *)) (func), \
2190 (info)))
2192 /* Get the sh ELF linker hash table from a link_info structure. */
2194 #define sh_elf_hash_table(p) \
2195 ((is_elf_hash_table ((p)->hash) \
2196 && elf_hash_table_id (elf_hash_table (p)) == SH_ELF_DATA) \
2197 ? (struct elf_sh_link_hash_table *) (p)->hash : NULL)
2199 /* Create an entry in an sh ELF linker hash table. */
2201 static struct bfd_hash_entry *
2202 sh_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2203 struct bfd_hash_table *table,
2204 const char *string)
2206 struct elf_sh_link_hash_entry *ret =
2207 (struct elf_sh_link_hash_entry *) entry;
2209 /* Allocate the structure if it has not already been allocated by a
2210 subclass. */
2211 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2212 ret = ((struct elf_sh_link_hash_entry *)
2213 bfd_hash_allocate (table,
2214 sizeof (struct elf_sh_link_hash_entry)));
2215 if (ret == (struct elf_sh_link_hash_entry *) NULL)
2216 return (struct bfd_hash_entry *) ret;
2218 /* Call the allocation method of the superclass. */
2219 ret = ((struct elf_sh_link_hash_entry *)
2220 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2221 table, string));
2222 if (ret != (struct elf_sh_link_hash_entry *) NULL)
2224 ret->gotplt_refcount = 0;
2225 ret->funcdesc.refcount = 0;
2226 ret->abs_funcdesc_refcount = 0;
2227 ret->got_type = GOT_UNKNOWN;
2230 return (struct bfd_hash_entry *) ret;
2233 /* Create an sh ELF linker hash table. */
2235 static struct bfd_link_hash_table *
2236 sh_elf_link_hash_table_create (bfd *abfd)
2238 struct elf_sh_link_hash_table *ret;
2239 size_t amt = sizeof (struct elf_sh_link_hash_table);
2241 ret = (struct elf_sh_link_hash_table *) bfd_zmalloc (amt);
2242 if (ret == (struct elf_sh_link_hash_table *) NULL)
2243 return NULL;
2245 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
2246 sh_elf_link_hash_newfunc,
2247 sizeof (struct elf_sh_link_hash_entry),
2248 SH_ELF_DATA))
2250 free (ret);
2251 return NULL;
2254 if (fdpic_object_p (abfd))
2256 ret->root.dt_pltgot_required = true;
2257 ret->fdpic_p = true;
2260 return &ret->root.root;
2263 static bool
2264 sh_elf_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
2265 struct bfd_link_info *info, asection *p)
2267 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
2269 /* Non-FDPIC binaries do not need dynamic symbols for sections. */
2270 if (!htab->fdpic_p)
2271 return true;
2273 /* We need dynamic symbols for every section, since segments can
2274 relocate independently. */
2275 switch (elf_section_data (p)->this_hdr.sh_type)
2277 case SHT_PROGBITS:
2278 case SHT_NOBITS:
2279 /* If sh_type is yet undecided, assume it could be
2280 SHT_PROGBITS/SHT_NOBITS. */
2281 case SHT_NULL:
2282 return false;
2284 /* There shouldn't be section relative relocations
2285 against any other section. */
2286 default:
2287 return true;
2291 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
2292 shortcuts to them in our hash table. */
2294 static bool
2295 create_got_section (bfd *dynobj, struct bfd_link_info *info)
2297 struct elf_sh_link_hash_table *htab;
2299 if (! _bfd_elf_create_got_section (dynobj, info))
2300 return false;
2302 htab = sh_elf_hash_table (info);
2303 if (htab == NULL)
2304 return false;
2306 htab->sfuncdesc = bfd_make_section_anyway_with_flags (dynobj, ".got.funcdesc",
2307 (SEC_ALLOC | SEC_LOAD
2308 | SEC_HAS_CONTENTS
2309 | SEC_IN_MEMORY
2310 | SEC_LINKER_CREATED));
2311 if (htab->sfuncdesc == NULL
2312 || !bfd_set_section_alignment (htab->sfuncdesc, 2))
2313 return false;
2315 htab->srelfuncdesc = bfd_make_section_anyway_with_flags (dynobj,
2316 ".rela.got.funcdesc",
2317 (SEC_ALLOC | SEC_LOAD
2318 | SEC_HAS_CONTENTS
2319 | SEC_IN_MEMORY
2320 | SEC_LINKER_CREATED
2321 | SEC_READONLY));
2322 if (htab->srelfuncdesc == NULL
2323 || !bfd_set_section_alignment (htab->srelfuncdesc, 2))
2324 return false;
2326 /* Also create .rofixup. */
2327 htab->srofixup = bfd_make_section_anyway_with_flags (dynobj, ".rofixup",
2328 (SEC_ALLOC | SEC_LOAD
2329 | SEC_HAS_CONTENTS
2330 | SEC_IN_MEMORY
2331 | SEC_LINKER_CREATED
2332 | SEC_READONLY));
2333 if (htab->srofixup == NULL
2334 || !bfd_set_section_alignment (htab->srofixup, 2))
2335 return false;
2337 return true;
2340 /* Create dynamic sections when linking against a dynamic object. */
2342 static bool
2343 sh_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2345 struct elf_sh_link_hash_table *htab;
2346 flagword flags, pltflags;
2347 asection *s;
2348 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2349 int ptralign = 0;
2351 switch (bed->s->arch_size)
2353 case 32:
2354 ptralign = 2;
2355 break;
2357 case 64:
2358 ptralign = 3;
2359 break;
2361 default:
2362 bfd_set_error (bfd_error_bad_value);
2363 return false;
2366 htab = sh_elf_hash_table (info);
2367 if (htab == NULL)
2368 return false;
2370 if (htab->root.dynamic_sections_created)
2371 return true;
2373 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
2374 .rel[a].bss sections. */
2376 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2377 | SEC_LINKER_CREATED);
2379 pltflags = flags;
2380 pltflags |= SEC_CODE;
2381 if (bed->plt_not_loaded)
2382 pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
2383 if (bed->plt_readonly)
2384 pltflags |= SEC_READONLY;
2386 s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags);
2387 htab->root.splt = s;
2388 if (s == NULL
2389 || !bfd_set_section_alignment (s, bed->plt_alignment))
2390 return false;
2392 if (bed->want_plt_sym)
2394 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
2395 .plt section. */
2396 struct elf_link_hash_entry *h;
2397 struct bfd_link_hash_entry *bh = NULL;
2399 if (! (_bfd_generic_link_add_one_symbol
2400 (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
2401 (bfd_vma) 0, (const char *) NULL, false,
2402 get_elf_backend_data (abfd)->collect, &bh)))
2403 return false;
2405 h = (struct elf_link_hash_entry *) bh;
2406 h->def_regular = 1;
2407 h->type = STT_OBJECT;
2408 htab->root.hplt = h;
2410 if (bfd_link_pic (info)
2411 && ! bfd_elf_link_record_dynamic_symbol (info, h))
2412 return false;
2415 s = bfd_make_section_anyway_with_flags (abfd,
2416 bed->default_use_rela_p
2417 ? ".rela.plt" : ".rel.plt",
2418 flags | SEC_READONLY);
2419 htab->root.srelplt = s;
2420 if (s == NULL
2421 || !bfd_set_section_alignment (s, ptralign))
2422 return false;
2424 if (htab->root.sgot == NULL
2425 && !create_got_section (abfd, info))
2426 return false;
2428 if (bed->want_dynbss)
2430 /* The .dynbss section is a place to put symbols which are defined
2431 by dynamic objects, are referenced by regular objects, and are
2432 not functions. We must allocate space for them in the process
2433 image and use a R_*_COPY reloc to tell the dynamic linker to
2434 initialize them at run time. The linker script puts the .dynbss
2435 section into the .bss section of the final image. */
2436 s = bfd_make_section_anyway_with_flags (abfd, ".dynbss",
2437 SEC_ALLOC | SEC_LINKER_CREATED);
2438 htab->root.sdynbss = s;
2439 if (s == NULL)
2440 return false;
2442 /* The .rel[a].bss section holds copy relocs. This section is not
2443 normally needed. We need to create it here, though, so that the
2444 linker will map it to an output section. We can't just create it
2445 only if we need it, because we will not know whether we need it
2446 until we have seen all the input files, and the first time the
2447 main linker code calls BFD after examining all the input files
2448 (size_dynamic_sections) the input sections have already been
2449 mapped to the output sections. If the section turns out not to
2450 be needed, we can discard it later. We will never need this
2451 section when generating a shared object, since they do not use
2452 copy relocs. */
2453 if (! bfd_link_pic (info))
2455 s = bfd_make_section_anyway_with_flags (abfd,
2456 (bed->default_use_rela_p
2457 ? ".rela.bss" : ".rel.bss"),
2458 flags | SEC_READONLY);
2459 htab->root.srelbss = s;
2460 if (s == NULL
2461 || !bfd_set_section_alignment (s, ptralign))
2462 return false;
2466 if (htab->root.target_os == is_vxworks)
2468 if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
2469 return false;
2472 return true;
2475 /* Adjust a symbol defined by a dynamic object and referenced by a
2476 regular object. The current definition is in some section of the
2477 dynamic object, but we're not including those sections. We have to
2478 change the definition to something the rest of the link can
2479 understand. */
2481 static bool
2482 sh_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
2483 struct elf_link_hash_entry *h)
2485 struct elf_sh_link_hash_table *htab;
2486 asection *s;
2488 htab = sh_elf_hash_table (info);
2489 if (htab == NULL)
2490 return false;
2492 /* Make sure we know what is going on here. */
2493 BFD_ASSERT (htab->root.dynobj != NULL
2494 && (h->needs_plt
2495 || h->is_weakalias
2496 || (h->def_dynamic
2497 && h->ref_regular
2498 && !h->def_regular)));
2500 /* If this is a function, put it in the procedure linkage table. We
2501 will fill in the contents of the procedure linkage table later,
2502 when we know the address of the .got section. */
2503 if (h->type == STT_FUNC
2504 || h->needs_plt)
2506 if (h->plt.refcount <= 0
2507 || SYMBOL_CALLS_LOCAL (info, h)
2508 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2509 && h->root.type == bfd_link_hash_undefweak))
2511 /* This case can occur if we saw a PLT reloc in an input
2512 file, but the symbol was never referred to by a dynamic
2513 object. In such a case, we don't actually need to build
2514 a procedure linkage table, and we can just do a REL32
2515 reloc instead. */
2516 h->plt.offset = (bfd_vma) -1;
2517 h->needs_plt = 0;
2520 return true;
2522 else
2523 h->plt.offset = (bfd_vma) -1;
2525 /* If this is a weak symbol, and there is a real definition, the
2526 processor independent code will have arranged for us to see the
2527 real definition first, and we can just use the same value. */
2528 if (h->is_weakalias)
2530 struct elf_link_hash_entry *def = weakdef (h);
2531 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
2532 h->root.u.def.section = def->root.u.def.section;
2533 h->root.u.def.value = def->root.u.def.value;
2534 if (info->nocopyreloc)
2535 h->non_got_ref = def->non_got_ref;
2536 return true;
2539 /* This is a reference to a symbol defined by a dynamic object which
2540 is not a function. */
2542 /* If we are creating a shared library, we must presume that the
2543 only references to the symbol are via the global offset table.
2544 For such cases we need not do anything here; the relocations will
2545 be handled correctly by relocate_section. */
2546 if (bfd_link_pic (info))
2547 return true;
2549 /* If there are no references to this symbol that do not use the
2550 GOT, we don't need to generate a copy reloc. */
2551 if (!h->non_got_ref)
2552 return true;
2554 /* If -z nocopyreloc was given, we won't generate them either. */
2555 if (0 && info->nocopyreloc)
2557 h->non_got_ref = 0;
2558 return true;
2561 /* If we don't find any dynamic relocs in read-only sections, then
2562 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2563 if (0 && !_bfd_elf_readonly_dynrelocs (h))
2565 h->non_got_ref = 0;
2566 return true;
2569 /* We must allocate the symbol in our .dynbss section, which will
2570 become part of the .bss section of the executable. There will be
2571 an entry for this symbol in the .dynsym section. The dynamic
2572 object will contain position independent code, so all references
2573 from the dynamic object to this symbol will go through the global
2574 offset table. The dynamic linker will use the .dynsym entry to
2575 determine the address it must put in the global offset table, so
2576 both the dynamic object and the regular object will refer to the
2577 same memory location for the variable. */
2579 s = htab->root.sdynbss;
2580 BFD_ASSERT (s != NULL);
2582 /* We must generate a R_SH_COPY reloc to tell the dynamic linker to
2583 copy the initial value out of the dynamic object and into the
2584 runtime process image. We need to remember the offset into the
2585 .rela.bss section we are going to use. */
2586 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2588 asection *srel;
2590 srel = htab->root.srelbss;
2591 BFD_ASSERT (srel != NULL);
2592 srel->size += sizeof (Elf32_External_Rela);
2593 h->needs_copy = 1;
2596 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2599 /* Allocate space in .plt, .got and associated reloc sections for
2600 dynamic relocs. */
2602 static bool
2603 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2605 struct bfd_link_info *info;
2606 struct elf_sh_link_hash_table *htab;
2607 struct elf_sh_link_hash_entry *eh;
2608 struct elf_dyn_relocs *p;
2610 if (h->root.type == bfd_link_hash_indirect)
2611 return true;
2613 info = (struct bfd_link_info *) inf;
2614 htab = sh_elf_hash_table (info);
2615 if (htab == NULL)
2616 return false;
2618 eh = (struct elf_sh_link_hash_entry *) h;
2619 if ((h->got.refcount > 0
2620 || h->forced_local)
2621 && eh->gotplt_refcount > 0)
2623 /* The symbol has been forced local, or we have some direct got refs,
2624 so treat all the gotplt refs as got refs. */
2625 h->got.refcount += eh->gotplt_refcount;
2626 if (h->plt.refcount >= eh->gotplt_refcount)
2627 h->plt.refcount -= eh->gotplt_refcount;
2630 if (htab->root.dynamic_sections_created
2631 && h->plt.refcount > 0
2632 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2633 || h->root.type != bfd_link_hash_undefweak))
2635 /* Make sure this symbol is output as a dynamic symbol.
2636 Undefined weak syms won't yet be marked as dynamic. */
2637 if (h->dynindx == -1
2638 && !h->forced_local)
2640 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2641 return false;
2644 if (bfd_link_pic (info)
2645 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
2647 asection *s = htab->root.splt;
2648 const struct elf_sh_plt_info *plt_info;
2650 /* If this is the first .plt entry, make room for the special
2651 first entry. */
2652 if (s->size == 0)
2653 s->size += htab->plt_info->plt0_entry_size;
2655 h->plt.offset = s->size;
2657 /* If this symbol is not defined in a regular file, and we are
2658 not generating a shared library, then set the symbol to this
2659 location in the .plt. This is required to make function
2660 pointers compare as equal between the normal executable and
2661 the shared library. Skip this for FDPIC, since the
2662 function's address will be the address of the canonical
2663 function descriptor. */
2664 if (!htab->fdpic_p && !bfd_link_pic (info) && !h->def_regular)
2666 h->root.u.def.section = s;
2667 h->root.u.def.value = h->plt.offset;
2670 /* Make room for this entry. */
2671 plt_info = htab->plt_info;
2672 if (plt_info->short_plt != NULL
2673 && (get_plt_index (plt_info->short_plt, s->size) < MAX_SHORT_PLT))
2674 plt_info = plt_info->short_plt;
2675 s->size += plt_info->symbol_entry_size;
2677 /* We also need to make an entry in the .got.plt section, which
2678 will be placed in the .got section by the linker script. */
2679 if (!htab->fdpic_p)
2680 htab->root.sgotplt->size += 4;
2681 else
2682 htab->root.sgotplt->size += 8;
2684 /* We also need to make an entry in the .rel.plt section. */
2685 htab->root.srelplt->size += sizeof (Elf32_External_Rela);
2687 if (htab->root.target_os == is_vxworks && !bfd_link_pic (info))
2689 /* VxWorks executables have a second set of relocations
2690 for each PLT entry. They go in a separate relocation
2691 section, which is processed by the kernel loader. */
2693 /* There is a relocation for the initial PLT entry:
2694 an R_SH_DIR32 relocation for _GLOBAL_OFFSET_TABLE_. */
2695 if (h->plt.offset == htab->plt_info->plt0_entry_size)
2696 htab->srelplt2->size += sizeof (Elf32_External_Rela);
2698 /* There are two extra relocations for each subsequent
2699 PLT entry: an R_SH_DIR32 relocation for the GOT entry,
2700 and an R_SH_DIR32 relocation for the PLT entry. */
2701 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 2;
2704 else
2706 h->plt.offset = (bfd_vma) -1;
2707 h->needs_plt = 0;
2710 else
2712 h->plt.offset = (bfd_vma) -1;
2713 h->needs_plt = 0;
2716 if (h->got.refcount > 0)
2718 asection *s;
2719 bool dyn;
2720 enum got_type got_type = sh_elf_hash_entry (h)->got_type;
2722 /* Make sure this symbol is output as a dynamic symbol.
2723 Undefined weak syms won't yet be marked as dynamic. */
2724 if (h->dynindx == -1
2725 && !h->forced_local)
2727 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2728 return false;
2731 s = htab->root.sgot;
2732 h->got.offset = s->size;
2733 s->size += 4;
2734 /* R_SH_TLS_GD needs 2 consecutive GOT slots. */
2735 if (got_type == GOT_TLS_GD)
2736 s->size += 4;
2737 dyn = htab->root.dynamic_sections_created;
2738 if (!dyn)
2740 /* No dynamic relocations required. */
2741 if (htab->fdpic_p && !bfd_link_pic (info)
2742 && h->root.type != bfd_link_hash_undefweak
2743 && (got_type == GOT_NORMAL || got_type == GOT_FUNCDESC))
2744 htab->srofixup->size += 4;
2746 /* No dynamic relocations required when IE->LE conversion happens. */
2747 else if (got_type == GOT_TLS_IE
2748 && !h->def_dynamic
2749 && !bfd_link_pic (info))
2751 /* R_SH_TLS_IE_32 needs one dynamic relocation if dynamic,
2752 R_SH_TLS_GD needs one if local symbol and two if global. */
2753 else if ((got_type == GOT_TLS_GD && h->dynindx == -1)
2754 || got_type == GOT_TLS_IE)
2755 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2756 else if (got_type == GOT_TLS_GD)
2757 htab->root.srelgot->size += 2 * sizeof (Elf32_External_Rela);
2758 else if (got_type == GOT_FUNCDESC)
2760 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
2761 htab->srofixup->size += 4;
2762 else
2763 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2765 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2766 || h->root.type != bfd_link_hash_undefweak)
2767 && (bfd_link_pic (info)
2768 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
2769 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
2770 else if (htab->fdpic_p
2771 && !bfd_link_pic (info)
2772 && got_type == GOT_NORMAL
2773 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2774 || h->root.type != bfd_link_hash_undefweak))
2775 htab->srofixup->size += 4;
2777 else
2778 h->got.offset = (bfd_vma) -1;
2780 /* Allocate space for any dynamic relocations to function
2781 descriptors, canonical or otherwise. We need to relocate the
2782 reference unless it resolves to zero, which only happens for
2783 undefined weak symbols (either non-default visibility, or when
2784 static linking). Any GOT slot is accounted for elsewhere. */
2785 if (eh->abs_funcdesc_refcount > 0
2786 && (h->root.type != bfd_link_hash_undefweak
2787 || (htab->root.dynamic_sections_created
2788 && ! SYMBOL_CALLS_LOCAL (info, h))))
2790 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
2791 htab->srofixup->size += eh->abs_funcdesc_refcount * 4;
2792 else
2793 htab->root.srelgot->size
2794 += eh->abs_funcdesc_refcount * sizeof (Elf32_External_Rela);
2797 /* We must allocate a function descriptor if there are references to
2798 a canonical descriptor (R_SH_GOTFUNCDESC or R_SH_FUNCDESC) and
2799 the dynamic linker isn't going to allocate it. None of this
2800 applies if we already created one in .got.plt, but if the
2801 canonical function descriptor can be in this object, there
2802 won't be a PLT entry at all. */
2803 if ((eh->funcdesc.refcount > 0
2804 || (h->got.offset != MINUS_ONE && eh->got_type == GOT_FUNCDESC))
2805 && h->root.type != bfd_link_hash_undefweak
2806 && SYMBOL_FUNCDESC_LOCAL (info, h))
2808 /* Make room for this function descriptor. */
2809 eh->funcdesc.offset = htab->sfuncdesc->size;
2810 htab->sfuncdesc->size += 8;
2812 /* We will need a relocation or two fixups to initialize the
2813 function descriptor, so allocate those too. */
2814 if (!bfd_link_pic (info) && SYMBOL_CALLS_LOCAL (info, h))
2815 htab->srofixup->size += 8;
2816 else
2817 htab->srelfuncdesc->size += sizeof (Elf32_External_Rela);
2820 if (h->dyn_relocs == NULL)
2821 return true;
2823 /* In the shared -Bsymbolic case, discard space allocated for
2824 dynamic pc-relative relocs against symbols which turn out to be
2825 defined in regular objects. For the normal shared case, discard
2826 space for pc-relative relocs that have become local due to symbol
2827 visibility changes. */
2829 if (bfd_link_pic (info))
2831 if (SYMBOL_CALLS_LOCAL (info, h))
2833 struct elf_dyn_relocs **pp;
2835 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
2837 p->count -= p->pc_count;
2838 p->pc_count = 0;
2839 if (p->count == 0)
2840 *pp = p->next;
2841 else
2842 pp = &p->next;
2846 if (htab->root.target_os == is_vxworks)
2848 struct elf_dyn_relocs **pp;
2850 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
2852 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2853 *pp = p->next;
2854 else
2855 pp = &p->next;
2859 /* Also discard relocs on undefined weak syms with non-default
2860 visibility. */
2861 if (h->dyn_relocs != NULL
2862 && h->root.type == bfd_link_hash_undefweak)
2864 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2865 || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
2866 h->dyn_relocs = NULL;
2868 /* Make sure undefined weak symbols are output as a dynamic
2869 symbol in PIEs. */
2870 else if (h->dynindx == -1
2871 && !h->forced_local)
2873 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2874 return false;
2878 else
2880 /* For the non-shared case, discard space for relocs against
2881 symbols which turn out to need copy relocs or are not
2882 dynamic. */
2884 if (!h->non_got_ref
2885 && ((h->def_dynamic
2886 && !h->def_regular)
2887 || (htab->root.dynamic_sections_created
2888 && (h->root.type == bfd_link_hash_undefweak
2889 || h->root.type == bfd_link_hash_undefined))))
2891 /* Make sure this symbol is output as a dynamic symbol.
2892 Undefined weak syms won't yet be marked as dynamic. */
2893 if (h->dynindx == -1
2894 && !h->forced_local)
2896 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2897 return false;
2900 /* If that succeeded, we know we'll be keeping all the
2901 relocs. */
2902 if (h->dynindx != -1)
2903 goto keep;
2906 h->dyn_relocs = NULL;
2908 keep: ;
2911 /* Finally, allocate space. */
2912 for (p = h->dyn_relocs; p != NULL; p = p->next)
2914 asection *sreloc = elf_section_data (p->sec)->sreloc;
2915 sreloc->size += p->count * sizeof (Elf32_External_Rela);
2917 /* If we need relocations, we do not need fixups. */
2918 if (htab->fdpic_p && !bfd_link_pic (info))
2919 htab->srofixup->size -= 4 * (p->count - p->pc_count);
2922 return true;
2925 /* This function is called after all the input files have been read,
2926 and the input sections have been assigned to output sections.
2927 It's a convenient place to determine the PLT style. */
2929 static bool
2930 sh_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info)
2932 sh_elf_hash_table (info)->plt_info = get_plt_info (output_bfd,
2933 bfd_link_pic (info));
2935 if (sh_elf_hash_table (info)->fdpic_p && !bfd_link_relocatable (info)
2936 && !bfd_elf_stack_segment_size (output_bfd, info,
2937 "__stacksize", DEFAULT_STACK_SIZE))
2938 return false;
2939 return true;
2942 /* Set the sizes of the dynamic sections. */
2944 static bool
2945 sh_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2946 struct bfd_link_info *info)
2948 struct elf_sh_link_hash_table *htab;
2949 bfd *dynobj;
2950 asection *s;
2951 bool relocs;
2952 bfd *ibfd;
2954 htab = sh_elf_hash_table (info);
2955 if (htab == NULL)
2956 return false;
2958 dynobj = htab->root.dynobj;
2959 BFD_ASSERT (dynobj != NULL);
2961 if (htab->root.dynamic_sections_created)
2963 /* Set the contents of the .interp section to the interpreter. */
2964 if (bfd_link_executable (info) && !info->nointerp)
2966 s = bfd_get_linker_section (dynobj, ".interp");
2967 BFD_ASSERT (s != NULL);
2968 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2969 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2973 /* Set up .got offsets for local syms, and space for local dynamic
2974 relocs. */
2975 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2977 bfd_signed_vma *local_got;
2978 bfd_signed_vma *end_local_got;
2979 union gotref *local_funcdesc, *end_local_funcdesc;
2980 char *local_got_type;
2981 bfd_size_type locsymcount;
2982 Elf_Internal_Shdr *symtab_hdr;
2983 asection *srel;
2985 if (! is_sh_elf (ibfd))
2986 continue;
2988 for (s = ibfd->sections; s != NULL; s = s->next)
2990 struct elf_dyn_relocs *p;
2992 for (p = ((struct elf_dyn_relocs *)
2993 elf_section_data (s)->local_dynrel);
2994 p != NULL;
2995 p = p->next)
2997 if (! bfd_is_abs_section (p->sec)
2998 && bfd_is_abs_section (p->sec->output_section))
3000 /* Input section has been discarded, either because
3001 it is a copy of a linkonce section or due to
3002 linker script /DISCARD/, so we'll be discarding
3003 the relocs too. */
3005 else if (htab->root.target_os == is_vxworks
3006 && strcmp (p->sec->output_section->name,
3007 ".tls_vars") == 0)
3009 /* Relocations in vxworks .tls_vars sections are
3010 handled specially by the loader. */
3012 else if (p->count != 0)
3014 srel = elf_section_data (p->sec)->sreloc;
3015 srel->size += p->count * sizeof (Elf32_External_Rela);
3016 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
3018 info->flags |= DF_TEXTREL;
3019 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
3020 p->sec->owner, p->sec);
3023 /* If we need relocations, we do not need fixups. */
3024 if (htab->fdpic_p && !bfd_link_pic (info))
3025 htab->srofixup->size -= 4 * (p->count - p->pc_count);
3030 symtab_hdr = &elf_symtab_hdr (ibfd);
3031 locsymcount = symtab_hdr->sh_info;
3032 s = htab->root.sgot;
3033 srel = htab->root.srelgot;
3035 local_got = elf_local_got_refcounts (ibfd);
3036 if (local_got)
3038 end_local_got = local_got + locsymcount;
3039 local_got_type = sh_elf_local_got_type (ibfd);
3040 local_funcdesc = sh_elf_local_funcdesc (ibfd);
3041 for (; local_got < end_local_got; ++local_got)
3043 if (*local_got > 0)
3045 *local_got = s->size;
3046 s->size += 4;
3047 if (*local_got_type == GOT_TLS_GD)
3048 s->size += 4;
3049 if (bfd_link_pic (info))
3050 srel->size += sizeof (Elf32_External_Rela);
3051 else
3052 htab->srofixup->size += 4;
3054 if (*local_got_type == GOT_FUNCDESC)
3056 if (local_funcdesc == NULL)
3058 bfd_size_type size;
3060 size = locsymcount * sizeof (union gotref);
3061 local_funcdesc = (union gotref *) bfd_zalloc (ibfd,
3062 size);
3063 if (local_funcdesc == NULL)
3064 return false;
3065 sh_elf_local_funcdesc (ibfd) = local_funcdesc;
3066 local_funcdesc += (local_got
3067 - elf_local_got_refcounts (ibfd));
3069 local_funcdesc->refcount++;
3070 ++local_funcdesc;
3073 else
3074 *local_got = (bfd_vma) -1;
3075 ++local_got_type;
3079 local_funcdesc = sh_elf_local_funcdesc (ibfd);
3080 if (local_funcdesc)
3082 end_local_funcdesc = local_funcdesc + locsymcount;
3084 for (; local_funcdesc < end_local_funcdesc; ++local_funcdesc)
3086 if (local_funcdesc->refcount > 0)
3088 local_funcdesc->offset = htab->sfuncdesc->size;
3089 htab->sfuncdesc->size += 8;
3090 if (!bfd_link_pic (info))
3091 htab->srofixup->size += 8;
3092 else
3093 htab->srelfuncdesc->size += sizeof (Elf32_External_Rela);
3095 else
3096 local_funcdesc->offset = MINUS_ONE;
3102 if (htab->tls_ldm_got.refcount > 0)
3104 /* Allocate 2 got entries and 1 dynamic reloc for R_SH_TLS_LD_32
3105 relocs. */
3106 htab->tls_ldm_got.offset = htab->root.sgot->size;
3107 htab->root.sgot->size += 8;
3108 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
3110 else
3111 htab->tls_ldm_got.offset = -1;
3113 /* Only the reserved entries should be present. For FDPIC, they go at
3114 the end of .got.plt. */
3115 if (htab->fdpic_p)
3117 BFD_ASSERT (htab->root.sgotplt && htab->root.sgotplt->size == 12);
3118 htab->root.sgotplt->size = 0;
3121 /* Allocate global sym .plt and .got entries, and space for global
3122 sym dynamic relocs. */
3123 elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
3125 /* Move the reserved entries and the _GLOBAL_OFFSET_TABLE_ symbol to the
3126 end of the FDPIC .got.plt. */
3127 if (htab->fdpic_p)
3129 htab->root.hgot->root.u.def.value = htab->root.sgotplt->size;
3130 htab->root.sgotplt->size += 12;
3133 /* At the very end of the .rofixup section is a pointer to the GOT. */
3134 if (htab->fdpic_p && htab->srofixup != NULL)
3135 htab->srofixup->size += 4;
3137 /* We now have determined the sizes of the various dynamic sections.
3138 Allocate memory for them. */
3139 relocs = false;
3140 for (s = dynobj->sections; s != NULL; s = s->next)
3142 if ((s->flags & SEC_LINKER_CREATED) == 0)
3143 continue;
3145 if (s == htab->root.splt
3146 || s == htab->root.sgot
3147 || s == htab->root.sgotplt
3148 || s == htab->sfuncdesc
3149 || s == htab->srofixup
3150 || s == htab->root.sdynbss)
3152 /* Strip this section if we don't need it; see the
3153 comment below. */
3155 else if (startswith (bfd_section_name (s), ".rela"))
3157 if (s->size != 0 && s != htab->root.srelplt && s != htab->srelplt2)
3158 relocs = true;
3160 /* We use the reloc_count field as a counter if we need
3161 to copy relocs into the output file. */
3162 s->reloc_count = 0;
3164 else
3166 /* It's not one of our sections, so don't allocate space. */
3167 continue;
3170 if (s->size == 0)
3172 /* If we don't need this section, strip it from the
3173 output file. This is mostly to handle .rela.bss and
3174 .rela.plt. We must create both sections in
3175 create_dynamic_sections, because they must be created
3176 before the linker maps input sections to output
3177 sections. The linker does that before
3178 adjust_dynamic_symbol is called, and it is that
3179 function which decides whether anything needs to go
3180 into these sections. */
3182 s->flags |= SEC_EXCLUDE;
3183 continue;
3186 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3187 continue;
3189 /* Allocate memory for the section contents. We use bfd_zalloc
3190 here in case unused entries are not reclaimed before the
3191 section's contents are written out. This should not happen,
3192 but this way if it does, we get a R_SH_NONE reloc instead
3193 of garbage. */
3194 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3195 if (s->contents == NULL)
3196 return false;
3199 return _bfd_elf_maybe_vxworks_add_dynamic_tags (output_bfd, info,
3200 relocs);
3203 /* Add a dynamic relocation to the SRELOC section. */
3205 inline static bfd_vma
3206 sh_elf_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset,
3207 int reloc_type, long dynindx, bfd_vma addend)
3209 Elf_Internal_Rela outrel;
3210 bfd_vma reloc_offset;
3212 outrel.r_offset = offset;
3213 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type);
3214 outrel.r_addend = addend;
3216 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rela);
3217 BFD_ASSERT (reloc_offset < sreloc->size);
3218 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
3219 sreloc->contents + reloc_offset);
3220 sreloc->reloc_count++;
3222 return reloc_offset;
3225 /* Add an FDPIC read-only fixup. */
3227 inline static void
3228 sh_elf_add_rofixup (bfd *output_bfd, asection *srofixup, bfd_vma offset)
3230 bfd_vma fixup_offset;
3232 fixup_offset = srofixup->reloc_count++ * 4;
3233 BFD_ASSERT (fixup_offset < srofixup->size);
3234 bfd_put_32 (output_bfd, offset, srofixup->contents + fixup_offset);
3237 /* Return the offset of the generated .got section from the
3238 _GLOBAL_OFFSET_TABLE_ symbol. */
3240 static bfd_signed_vma
3241 sh_elf_got_offset (struct elf_sh_link_hash_table *htab)
3243 return (htab->root.sgot->output_offset - htab->root.sgotplt->output_offset
3244 - htab->root.hgot->root.u.def.value);
3247 /* Find the segment number in which OSEC, and output section, is
3248 located. */
3250 static unsigned
3251 sh_elf_osec_to_segment (bfd *output_bfd, asection *osec)
3253 Elf_Internal_Phdr *p = NULL;
3255 if (output_bfd->xvec->flavour == bfd_target_elf_flavour
3256 /* PR ld/17110: Do not look for output segments in an input bfd. */
3257 && output_bfd->direction != read_direction)
3258 p = _bfd_elf_find_segment_containing_section (output_bfd, osec);
3260 /* FIXME: Nothing ever says what this index is relative to. The kernel
3261 supplies data in terms of the number of load segments but this is
3262 a phdr index and the first phdr may not be a load segment. */
3263 return (p != NULL) ? p - elf_tdata (output_bfd)->phdr : -1;
3266 static bool
3267 sh_elf_osec_readonly_p (bfd *output_bfd, asection *osec)
3269 unsigned seg = sh_elf_osec_to_segment (output_bfd, osec);
3271 return (seg != (unsigned) -1
3272 && ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W));
3275 /* Generate the initial contents of a local function descriptor, along
3276 with any relocations or fixups required. */
3277 static bool
3278 sh_elf_initialize_funcdesc (bfd *output_bfd,
3279 struct bfd_link_info *info,
3280 struct elf_link_hash_entry *h,
3281 bfd_vma offset,
3282 asection *section,
3283 bfd_vma value)
3285 struct elf_sh_link_hash_table *htab;
3286 int dynindx;
3287 bfd_vma addr, seg;
3289 htab = sh_elf_hash_table (info);
3291 /* FIXME: The ABI says that the offset to the function goes in the
3292 descriptor, along with the segment index. We're RELA, so it could
3293 go in the reloc instead... */
3295 if (h != NULL && SYMBOL_CALLS_LOCAL (info, h))
3297 section = h->root.u.def.section;
3298 value = h->root.u.def.value;
3301 if (h == NULL || SYMBOL_CALLS_LOCAL (info, h))
3303 dynindx = elf_section_data (section->output_section)->dynindx;
3304 addr = value + section->output_offset;
3305 seg = sh_elf_osec_to_segment (output_bfd, section->output_section);
3307 else
3309 BFD_ASSERT (h->dynindx != -1);
3310 dynindx = h->dynindx;
3311 addr = seg = 0;
3314 if (!bfd_link_pic (info) && SYMBOL_CALLS_LOCAL (info, h))
3316 if (h == NULL || h->root.type != bfd_link_hash_undefweak)
3318 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3319 offset
3320 + htab->sfuncdesc->output_section->vma
3321 + htab->sfuncdesc->output_offset);
3322 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3323 offset + 4
3324 + htab->sfuncdesc->output_section->vma
3325 + htab->sfuncdesc->output_offset);
3328 /* There are no dynamic relocations so fill in the final
3329 address and gp value (barring fixups). */
3330 addr += section->output_section->vma;
3331 seg = htab->root.hgot->root.u.def.value
3332 + htab->root.hgot->root.u.def.section->output_section->vma
3333 + htab->root.hgot->root.u.def.section->output_offset;
3335 else
3336 sh_elf_add_dyn_reloc (output_bfd, htab->srelfuncdesc,
3337 offset
3338 + htab->sfuncdesc->output_section->vma
3339 + htab->sfuncdesc->output_offset,
3340 R_SH_FUNCDESC_VALUE, dynindx, 0);
3342 bfd_put_32 (output_bfd, addr, htab->sfuncdesc->contents + offset);
3343 bfd_put_32 (output_bfd, seg, htab->sfuncdesc->contents + offset + 4);
3345 return true;
3348 /* Install a 20-bit movi20 field starting at ADDR, which occurs in OUTPUT_BFD.
3349 VALUE is the field's value. Return bfd_reloc_ok if successful or an error
3350 otherwise. */
3352 static bfd_reloc_status_type
3353 install_movi20_field (bfd *output_bfd, unsigned long relocation,
3354 bfd *input_bfd, asection *input_section,
3355 bfd_byte *contents, bfd_vma offset)
3357 unsigned long cur_val;
3358 bfd_byte *addr;
3359 bfd_reloc_status_type r;
3361 if (offset > bfd_get_section_limit (input_bfd, input_section))
3362 return bfd_reloc_outofrange;
3364 r = bfd_check_overflow (complain_overflow_signed, 20, 0,
3365 bfd_arch_bits_per_address (input_bfd), relocation);
3366 if (r != bfd_reloc_ok)
3367 return r;
3369 addr = contents + offset;
3370 cur_val = bfd_get_16 (output_bfd, addr);
3371 bfd_put_16 (output_bfd, cur_val | ((relocation & 0xf0000) >> 12), addr);
3372 bfd_put_16 (output_bfd, relocation & 0xffff, addr + 2);
3374 return bfd_reloc_ok;
3377 /* Relocate an SH ELF section. */
3379 static int
3380 sh_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
3381 bfd *input_bfd, asection *input_section,
3382 bfd_byte *contents, Elf_Internal_Rela *relocs,
3383 Elf_Internal_Sym *local_syms,
3384 asection **local_sections)
3386 struct elf_sh_link_hash_table *htab;
3387 Elf_Internal_Shdr *symtab_hdr;
3388 struct elf_link_hash_entry **sym_hashes;
3389 Elf_Internal_Rela *rel, *relend;
3390 bfd_vma *local_got_offsets;
3391 asection *sgot = NULL;
3392 asection *sgotplt = NULL;
3393 asection *splt = NULL;
3394 asection *sreloc = NULL;
3395 asection *srelgot = NULL;
3396 bool is_vxworks_tls;
3397 unsigned isec_segment, got_segment, plt_segment, check_segment[2];
3398 bool fdpic_p = false;
3400 if (!is_sh_elf (input_bfd))
3402 bfd_set_error (bfd_error_wrong_format);
3403 return false;
3406 htab = sh_elf_hash_table (info);
3407 if (htab != NULL)
3409 sgot = htab->root.sgot;
3410 sgotplt = htab->root.sgotplt;
3411 srelgot = htab->root.srelgot;
3412 splt = htab->root.splt;
3413 fdpic_p = htab->fdpic_p;
3415 symtab_hdr = &elf_symtab_hdr (input_bfd);
3416 sym_hashes = elf_sym_hashes (input_bfd);
3417 local_got_offsets = elf_local_got_offsets (input_bfd);
3419 isec_segment = sh_elf_osec_to_segment (output_bfd,
3420 input_section->output_section);
3421 if (fdpic_p && sgot)
3422 got_segment = sh_elf_osec_to_segment (output_bfd,
3423 sgot->output_section);
3424 else
3425 got_segment = -1;
3426 if (fdpic_p && splt)
3427 plt_segment = sh_elf_osec_to_segment (output_bfd,
3428 splt->output_section);
3429 else
3430 plt_segment = -1;
3432 /* We have to handle relocations in vxworks .tls_vars sections
3433 specially, because the dynamic loader is 'weird'. */
3434 is_vxworks_tls = (htab && htab->root.target_os == is_vxworks && bfd_link_pic (info)
3435 && !strcmp (input_section->output_section->name,
3436 ".tls_vars"));
3438 rel = relocs;
3439 relend = relocs + input_section->reloc_count;
3440 for (; rel < relend; rel++)
3442 int r_type;
3443 reloc_howto_type *howto;
3444 unsigned long r_symndx;
3445 Elf_Internal_Sym *sym;
3446 asection *sec;
3447 struct elf_link_hash_entry *h;
3448 bfd_vma relocation;
3449 bfd_vma addend = (bfd_vma) 0;
3450 bfd_reloc_status_type r;
3451 bfd_vma off;
3452 enum got_type got_type;
3453 const char *symname = NULL;
3454 bool resolved_to_zero;
3456 r_symndx = ELF32_R_SYM (rel->r_info);
3458 r_type = ELF32_R_TYPE (rel->r_info);
3460 /* Many of the relocs are only used for relaxing, and are
3461 handled entirely by the relaxation code. */
3462 if (r_type >= (int) R_SH_GNU_VTINHERIT
3463 && r_type <= (int) R_SH_LABEL)
3464 continue;
3465 if (r_type == (int) R_SH_NONE)
3466 continue;
3468 if (r_type < 0
3469 || r_type >= R_SH_max
3470 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC
3471 && r_type <= (int) R_SH_LAST_INVALID_RELOC)
3472 || (r_type >= (int) R_SH_FIRST_INVALID_RELOC_2
3473 && r_type <= (int) R_SH_LAST_INVALID_RELOC_2)
3474 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_3
3475 && r_type <= (int) R_SH_LAST_INVALID_RELOC_3)
3476 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_4
3477 && r_type <= (int) R_SH_LAST_INVALID_RELOC_4)
3478 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_5
3479 && r_type <= (int) R_SH_LAST_INVALID_RELOC_5)
3480 || ( r_type >= (int) R_SH_FIRST_INVALID_RELOC_6
3481 && r_type <= (int) R_SH_LAST_INVALID_RELOC_6))
3483 bfd_set_error (bfd_error_bad_value);
3484 return false;
3487 howto = get_howto_table (output_bfd) + r_type;
3489 /* For relocs that aren't partial_inplace, we get the addend from
3490 the relocation. */
3491 if (! howto->partial_inplace)
3492 addend = rel->r_addend;
3494 resolved_to_zero = false;
3495 h = NULL;
3496 sym = NULL;
3497 sec = NULL;
3498 check_segment[0] = -1;
3499 check_segment[1] = -1;
3500 if (r_symndx < symtab_hdr->sh_info)
3502 sym = local_syms + r_symndx;
3503 sec = local_sections[r_symndx];
3505 symname = bfd_elf_string_from_elf_section
3506 (input_bfd, symtab_hdr->sh_link, sym->st_name);
3507 if (symname == NULL || *symname == '\0')
3508 symname = bfd_section_name (sec);
3510 relocation = (sec->output_section->vma
3511 + sec->output_offset
3512 + sym->st_value);
3514 if (sec != NULL && discarded_section (sec))
3515 /* Handled below. */
3517 else if (bfd_link_relocatable (info))
3519 /* This is a relocatable link. We don't have to change
3520 anything, unless the reloc is against a section symbol,
3521 in which case we have to adjust according to where the
3522 section symbol winds up in the output section. */
3523 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3525 if (! howto->partial_inplace)
3527 /* For relocations with the addend in the
3528 relocation, we need just to update the addend.
3529 All real relocs are of type partial_inplace; this
3530 code is mostly for completeness. */
3531 rel->r_addend += sec->output_offset;
3533 continue;
3536 /* Relocs of type partial_inplace need to pick up the
3537 contents in the contents and add the offset resulting
3538 from the changed location of the section symbol.
3539 Using _bfd_final_link_relocate (e.g. goto
3540 final_link_relocate) here would be wrong, because
3541 relocations marked pc_relative would get the current
3542 location subtracted, and we must only do that at the
3543 final link. */
3544 r = _bfd_relocate_contents (howto, input_bfd,
3545 sec->output_offset
3546 + sym->st_value,
3547 contents + rel->r_offset);
3548 goto relocation_done;
3551 continue;
3553 else if (! howto->partial_inplace)
3555 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
3556 addend = rel->r_addend;
3558 else if ((sec->flags & SEC_MERGE)
3559 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3561 asection *msec;
3563 if (howto->rightshift || howto->src_mask != 0xffffffff)
3565 _bfd_error_handler
3566 /* xgettext:c-format */
3567 (_("%pB(%pA+%#" PRIx64 "): "
3568 "%s relocation against SEC_MERGE section"),
3569 input_bfd, input_section,
3570 (uint64_t) rel->r_offset, howto->name);
3571 return false;
3574 addend = bfd_get_32 (input_bfd, contents + rel->r_offset);
3575 msec = sec;
3576 addend =
3577 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
3578 - relocation;
3579 addend += msec->output_section->vma + msec->output_offset;
3580 bfd_put_32 (input_bfd, addend, contents + rel->r_offset);
3581 addend = 0;
3584 else
3586 /* FIXME: Ought to make use of the RELOC_FOR_GLOBAL_SYMBOL macro. */
3588 relocation = 0;
3589 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3590 symname = h->root.root.string;
3591 while (h->root.type == bfd_link_hash_indirect
3592 || h->root.type == bfd_link_hash_warning)
3593 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3594 if (h->root.type == bfd_link_hash_defined
3595 || h->root.type == bfd_link_hash_defweak)
3597 bool dyn;
3599 dyn = htab ? htab->root.dynamic_sections_created : false;
3600 sec = h->root.u.def.section;
3601 /* In these cases, we don't need the relocation value.
3602 We check specially because in some obscure cases
3603 sec->output_section will be NULL. */
3604 if (r_type == R_SH_GOTPC
3605 || r_type == R_SH_GOTPC_LOW16
3606 || r_type == R_SH_GOTPC_MEDLOW16
3607 || r_type == R_SH_GOTPC_MEDHI16
3608 || r_type == R_SH_GOTPC_HI16
3609 || ((r_type == R_SH_PLT32
3610 || r_type == R_SH_PLT_LOW16
3611 || r_type == R_SH_PLT_MEDLOW16
3612 || r_type == R_SH_PLT_MEDHI16
3613 || r_type == R_SH_PLT_HI16)
3614 && h->plt.offset != (bfd_vma) -1)
3615 || ((r_type == R_SH_GOT32
3616 || r_type == R_SH_GOT20
3617 || r_type == R_SH_GOTFUNCDESC
3618 || r_type == R_SH_GOTFUNCDESC20
3619 || r_type == R_SH_GOTOFFFUNCDESC
3620 || r_type == R_SH_GOTOFFFUNCDESC20
3621 || r_type == R_SH_FUNCDESC
3622 || r_type == R_SH_GOT_LOW16
3623 || r_type == R_SH_GOT_MEDLOW16
3624 || r_type == R_SH_GOT_MEDHI16
3625 || r_type == R_SH_GOT_HI16)
3626 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3627 bfd_link_pic (info),
3629 && (! bfd_link_pic (info)
3630 || (! info->symbolic && h->dynindx != -1)
3631 || !h->def_regular))
3632 /* The cases above are those in which relocation is
3633 overwritten in the switch block below. The cases
3634 below are those in which we must defer relocation
3635 to run-time, because we can't resolve absolute
3636 addresses when creating a shared library. */
3637 || (bfd_link_pic (info)
3638 && ((! info->symbolic && h->dynindx != -1)
3639 || !h->def_regular)
3640 && ((r_type == R_SH_DIR32
3641 && !h->forced_local)
3642 || (r_type == R_SH_REL32
3643 && !SYMBOL_CALLS_LOCAL (info, h)))
3644 && ((input_section->flags & SEC_ALLOC) != 0
3645 /* DWARF will emit R_SH_DIR32 relocations in its
3646 sections against symbols defined externally
3647 in shared libraries. We can't do anything
3648 with them here. */
3649 || ((input_section->flags & SEC_DEBUGGING) != 0
3650 && h->def_dynamic)))
3651 /* Dynamic relocs are not propagated for SEC_DEBUGGING
3652 sections because such sections are not SEC_ALLOC and
3653 thus ld.so will not process them. */
3654 || (sec->output_section == NULL
3655 && ((input_section->flags & SEC_DEBUGGING) != 0
3656 && h->def_dynamic))
3657 || (sec->output_section == NULL
3658 && (sh_elf_hash_entry (h)->got_type == GOT_TLS_IE
3659 || sh_elf_hash_entry (h)->got_type == GOT_TLS_GD)))
3661 else if (sec->output_section != NULL)
3662 relocation = (h->root.u.def.value
3663 + sec->output_section->vma
3664 + sec->output_offset);
3665 else if (!bfd_link_relocatable (info)
3666 && (_bfd_elf_section_offset (output_bfd, info,
3667 input_section,
3668 rel->r_offset)
3669 != (bfd_vma) -1))
3671 _bfd_error_handler
3672 /* xgettext:c-format */
3673 (_("%pB(%pA+%#" PRIx64 "): "
3674 "unresolvable %s relocation against symbol `%s'"),
3675 input_bfd,
3676 input_section,
3677 (uint64_t) rel->r_offset,
3678 howto->name,
3679 h->root.root.string);
3680 return false;
3683 else if (h->root.type == bfd_link_hash_undefweak)
3684 resolved_to_zero = UNDEFWEAK_NO_DYNAMIC_RELOC (info, h);
3685 else if (info->unresolved_syms_in_objects == RM_IGNORE
3686 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3688 else if (!bfd_link_relocatable (info))
3689 info->callbacks->undefined_symbol
3690 (info, h->root.root.string, input_bfd, input_section,
3691 rel->r_offset,
3692 (info->unresolved_syms_in_objects == RM_DIAGNOSE
3693 && !info->warn_unresolved_syms)
3694 || ELF_ST_VISIBILITY (h->other));
3697 if (sec != NULL && discarded_section (sec))
3698 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3699 rel, 1, relend, howto, 0, contents);
3701 if (bfd_link_relocatable (info))
3702 continue;
3704 /* Check for inter-segment relocations in FDPIC files. Most
3705 relocations connect the relocation site to the location of
3706 the target symbol, but there are some exceptions below. */
3707 check_segment[0] = isec_segment;
3708 if (sec != NULL)
3709 check_segment[1] = sh_elf_osec_to_segment (output_bfd,
3710 sec->output_section);
3711 else
3712 check_segment[1] = -1;
3714 switch ((int) r_type)
3716 final_link_relocate:
3717 /* COFF relocs don't use the addend. The addend is used for
3718 R_SH_DIR32 to be compatible with other compilers. */
3719 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3720 contents, rel->r_offset,
3721 relocation, addend);
3722 break;
3724 case R_SH_IND12W:
3725 goto final_link_relocate;
3727 case R_SH_DIR8WPN:
3728 case R_SH_DIR8WPZ:
3729 case R_SH_DIR8WPL:
3730 /* If the reloc is against the start of this section, then
3731 the assembler has already taken care of it and the reloc
3732 is here only to assist in relaxing. If the reloc is not
3733 against the start of this section, then it's against an
3734 external symbol and we must deal with it ourselves. */
3735 if (input_section->output_section->vma + input_section->output_offset
3736 != relocation)
3738 int disp = (relocation
3739 - input_section->output_section->vma
3740 - input_section->output_offset
3741 - rel->r_offset);
3742 int mask = 0;
3743 switch (r_type)
3745 case R_SH_DIR8WPN:
3746 case R_SH_DIR8WPZ: mask = 1; break;
3747 case R_SH_DIR8WPL: mask = 3; break;
3748 default: mask = 0; break;
3750 if (disp & mask)
3752 _bfd_error_handler
3753 /* xgettext:c-format */
3754 (_("%pB: %#" PRIx64 ": fatal: "
3755 "unaligned branch target for relax-support relocation"),
3756 input_section->owner,
3757 (uint64_t) rel->r_offset);
3758 bfd_set_error (bfd_error_bad_value);
3759 return false;
3761 relocation -= 4;
3762 goto final_link_relocate;
3764 r = bfd_reloc_ok;
3765 break;
3767 default:
3768 bfd_set_error (bfd_error_bad_value);
3769 return false;
3771 case R_SH_DIR16:
3772 case R_SH_DIR8:
3773 case R_SH_DIR8U:
3774 case R_SH_DIR8S:
3775 case R_SH_DIR4U:
3776 goto final_link_relocate;
3778 case R_SH_DIR8UL:
3779 case R_SH_DIR4UL:
3780 if (relocation & 3)
3782 _bfd_error_handler
3783 /* xgettext:c-format */
3784 (_("%pB: %#" PRIx64 ": fatal: "
3785 "unaligned %s relocation %#" PRIx64),
3786 input_section->owner, (uint64_t) rel->r_offset,
3787 howto->name, (uint64_t) relocation);
3788 bfd_set_error (bfd_error_bad_value);
3789 return false;
3791 goto final_link_relocate;
3793 case R_SH_DIR8UW:
3794 case R_SH_DIR8SW:
3795 case R_SH_DIR4UW:
3796 if (relocation & 1)
3798 _bfd_error_handler
3799 /* xgettext:c-format */
3800 (_("%pB: %#" PRIx64 ": fatal: "
3801 "unaligned %s relocation %#" PRIx64 ""),
3802 input_section->owner,
3803 (uint64_t) rel->r_offset, howto->name,
3804 (uint64_t) relocation);
3805 bfd_set_error (bfd_error_bad_value);
3806 return false;
3808 goto final_link_relocate;
3810 case R_SH_PSHA:
3811 if ((signed int)relocation < -32
3812 || (signed int)relocation > 32)
3814 _bfd_error_handler
3815 /* xgettext:c-format */
3816 (_("%pB: %#" PRIx64 ": fatal: R_SH_PSHA relocation %" PRId64
3817 " not in range -32..32"),
3818 input_section->owner,
3819 (uint64_t) rel->r_offset,
3820 (int64_t) relocation);
3821 bfd_set_error (bfd_error_bad_value);
3822 return false;
3824 goto final_link_relocate;
3826 case R_SH_PSHL:
3827 if ((signed int)relocation < -16
3828 || (signed int)relocation > 16)
3830 _bfd_error_handler
3831 /* xgettext:c-format */
3832 (_("%pB: %#" PRIx64 ": fatal: R_SH_PSHL relocation %" PRId64
3833 " not in range -32..32"),
3834 input_section->owner,
3835 (uint64_t) rel->r_offset,
3836 (int64_t) relocation);
3837 bfd_set_error (bfd_error_bad_value);
3838 return false;
3840 goto final_link_relocate;
3842 case R_SH_DIR32:
3843 case R_SH_REL32:
3844 if (bfd_link_pic (info)
3845 && (h == NULL
3846 || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3847 && !resolved_to_zero)
3848 || h->root.type != bfd_link_hash_undefweak)
3849 && r_symndx != STN_UNDEF
3850 && (input_section->flags & SEC_ALLOC) != 0
3851 && !is_vxworks_tls
3852 && (r_type == R_SH_DIR32
3853 || !SYMBOL_CALLS_LOCAL (info, h)))
3855 Elf_Internal_Rela outrel;
3856 bfd_byte *loc;
3857 bool skip, relocate;
3859 /* When generating a shared object, these relocations
3860 are copied into the output file to be resolved at run
3861 time. */
3863 if (sreloc == NULL)
3865 sreloc = _bfd_elf_get_dynamic_reloc_section
3866 (input_bfd, input_section, /*rela?*/ true);
3867 if (sreloc == NULL)
3868 return false;
3871 skip = false;
3872 relocate = false;
3874 outrel.r_offset =
3875 _bfd_elf_section_offset (output_bfd, info, input_section,
3876 rel->r_offset);
3877 if (outrel.r_offset == (bfd_vma) -1)
3878 skip = true;
3879 else if (outrel.r_offset == (bfd_vma) -2)
3880 skip = true, relocate = true;
3881 outrel.r_offset += (input_section->output_section->vma
3882 + input_section->output_offset);
3884 if (skip)
3885 memset (&outrel, 0, sizeof outrel);
3886 else if (r_type == R_SH_REL32)
3888 BFD_ASSERT (h != NULL && h->dynindx != -1);
3889 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_REL32);
3890 outrel.r_addend
3891 = (howto->partial_inplace
3892 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3893 : addend);
3895 else if (fdpic_p
3896 && (h == NULL
3897 || ((info->symbolic || h->dynindx == -1)
3898 && h->def_regular)))
3900 int dynindx;
3902 BFD_ASSERT (sec != NULL);
3903 BFD_ASSERT (sec->output_section != NULL);
3904 dynindx = elf_section_data (sec->output_section)->dynindx;
3905 outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
3906 outrel.r_addend = relocation;
3907 outrel.r_addend
3908 += (howto->partial_inplace
3909 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3910 : addend);
3911 outrel.r_addend -= sec->output_section->vma;
3913 else
3915 /* h->dynindx may be -1 if this symbol was marked to
3916 become local. */
3917 if (h == NULL
3918 || ((info->symbolic || h->dynindx == -1)
3919 && h->def_regular))
3921 relocate = howto->partial_inplace;
3922 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
3924 else
3926 BFD_ASSERT (h->dynindx != -1);
3927 outrel.r_info = ELF32_R_INFO (h->dynindx, R_SH_DIR32);
3929 outrel.r_addend = relocation;
3930 outrel.r_addend
3931 += (howto->partial_inplace
3932 ? bfd_get_32 (input_bfd, contents + rel->r_offset)
3933 : addend);
3936 loc = sreloc->contents;
3937 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
3938 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3940 check_segment[0] = check_segment[1] = -1;
3942 /* If this reloc is against an external symbol, we do
3943 not want to fiddle with the addend. Otherwise, we
3944 need to include the symbol value so that it becomes
3945 an addend for the dynamic reloc. */
3946 if (! relocate)
3947 continue;
3949 else if (fdpic_p && !bfd_link_pic (info)
3950 && r_type == R_SH_DIR32
3951 && (input_section->flags & SEC_ALLOC) != 0)
3953 bfd_vma offset;
3955 BFD_ASSERT (htab);
3957 if (sh_elf_osec_readonly_p (output_bfd,
3958 input_section->output_section))
3960 _bfd_error_handler
3961 /* xgettext:c-format */
3962 (_("%pB(%pA+%#" PRIx64 "): "
3963 "cannot emit fixup to `%s' in read-only section"),
3964 input_bfd,
3965 input_section,
3966 (uint64_t) rel->r_offset,
3967 symname);
3968 return false;
3971 offset = _bfd_elf_section_offset (output_bfd, info,
3972 input_section, rel->r_offset);
3973 if (offset != (bfd_vma)-1)
3974 sh_elf_add_rofixup (output_bfd, htab->srofixup,
3975 input_section->output_section->vma
3976 + input_section->output_offset
3977 + rel->r_offset);
3979 check_segment[0] = check_segment[1] = -1;
3981 /* We don't want warnings for non-NULL tests on undefined weak
3982 symbols. */
3983 else if (r_type == R_SH_REL32
3984 && h
3985 && h->root.type == bfd_link_hash_undefweak)
3986 check_segment[0] = check_segment[1] = -1;
3987 goto final_link_relocate;
3989 case R_SH_GOTPLT32:
3990 /* Relocation is to the entry for this symbol in the
3991 procedure linkage table. */
3993 if (h == NULL
3994 || h->forced_local
3995 || ! bfd_link_pic (info)
3996 || info->symbolic
3997 || h->dynindx == -1
3998 || h->plt.offset == (bfd_vma) -1
3999 || h->got.offset != (bfd_vma) -1)
4000 goto force_got;
4002 /* Relocation is to the entry for this symbol in the global
4003 offset table extension for the procedure linkage table. */
4005 BFD_ASSERT (htab);
4006 BFD_ASSERT (sgotplt != NULL);
4007 relocation = (sgotplt->output_offset
4008 + (get_plt_index (htab->plt_info, h->plt.offset)
4009 + 3) * 4);
4011 #ifdef GOT_BIAS
4012 relocation -= GOT_BIAS;
4013 #endif
4015 goto final_link_relocate;
4017 force_got:
4018 case R_SH_GOT32:
4019 case R_SH_GOT20:
4020 /* Relocation is to the entry for this symbol in the global
4021 offset table. */
4023 BFD_ASSERT (htab);
4024 BFD_ASSERT (sgot != NULL);
4025 check_segment[0] = check_segment[1] = -1;
4027 if (h != NULL)
4029 bool dyn;
4031 off = h->got.offset;
4032 BFD_ASSERT (off != (bfd_vma) -1);
4034 dyn = htab->root.dynamic_sections_created;
4035 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
4036 bfd_link_pic (info),
4038 || (bfd_link_pic (info)
4039 && SYMBOL_REFERENCES_LOCAL (info, h))
4040 || ((ELF_ST_VISIBILITY (h->other)
4041 || resolved_to_zero)
4042 && h->root.type == bfd_link_hash_undefweak))
4044 /* This is actually a static link, or it is a
4045 -Bsymbolic link and the symbol is defined
4046 locally, or the symbol was forced to be local
4047 because of a version file. We must initialize
4048 this entry in the global offset table. Since the
4049 offset must always be a multiple of 4, we use the
4050 least significant bit to record whether we have
4051 initialized it already.
4053 When doing a dynamic link, we create a .rela.got
4054 relocation entry to initialize the value. This
4055 is done in the finish_dynamic_symbol routine. */
4056 if ((off & 1) != 0)
4057 off &= ~1;
4058 else
4060 bfd_put_32 (output_bfd, relocation,
4061 sgot->contents + off);
4062 h->got.offset |= 1;
4064 /* If we initialize the GOT entry here with a valid
4065 symbol address, also add a fixup. */
4066 if (fdpic_p && !bfd_link_pic (info)
4067 && sh_elf_hash_entry (h)->got_type == GOT_NORMAL
4068 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4069 || h->root.type != bfd_link_hash_undefweak))
4070 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4071 sgot->output_section->vma
4072 + sgot->output_offset
4073 + off);
4077 relocation = sh_elf_got_offset (htab) + off;
4079 else
4081 BFD_ASSERT (local_got_offsets != NULL
4082 && local_got_offsets[r_symndx] != (bfd_vma) -1);
4084 off = local_got_offsets[r_symndx];
4086 /* The offset must always be a multiple of 4. We use
4087 the least significant bit to record whether we have
4088 already generated the necessary reloc. */
4089 if ((off & 1) != 0)
4090 off &= ~1;
4091 else
4093 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
4095 if (bfd_link_pic (info))
4097 Elf_Internal_Rela outrel;
4098 bfd_byte *loc;
4100 outrel.r_offset = (sgot->output_section->vma
4101 + sgot->output_offset
4102 + off);
4103 if (fdpic_p)
4105 int dynindx
4106 = elf_section_data (sec->output_section)->dynindx;
4107 outrel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
4108 outrel.r_addend = relocation;
4109 outrel.r_addend -= sec->output_section->vma;
4111 else
4113 outrel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
4114 outrel.r_addend = relocation;
4116 loc = srelgot->contents;
4117 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4118 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4120 else if (fdpic_p
4121 && (sh_elf_local_got_type (input_bfd) [r_symndx]
4122 == GOT_NORMAL))
4123 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4124 sgot->output_section->vma
4125 + sgot->output_offset
4126 + off);
4128 local_got_offsets[r_symndx] |= 1;
4131 relocation = sh_elf_got_offset (htab) + off;
4134 #ifdef GOT_BIAS
4135 relocation -= GOT_BIAS;
4136 #endif
4138 if (r_type == R_SH_GOT20)
4140 r = install_movi20_field (output_bfd, relocation + addend,
4141 input_bfd, input_section, contents,
4142 rel->r_offset);
4143 break;
4145 else
4146 goto final_link_relocate;
4148 case R_SH_GOTOFF:
4149 case R_SH_GOTOFF20:
4150 /* GOTOFF relocations are relative to _GLOBAL_OFFSET_TABLE_, which
4151 we place at the start of the .got.plt section. This is the same
4152 as the start of the output .got section, unless there are function
4153 descriptors in front of it. */
4154 BFD_ASSERT (htab);
4155 BFD_ASSERT (sgotplt != NULL);
4156 check_segment[0] = got_segment;
4157 relocation -= sgotplt->output_section->vma + sgotplt->output_offset
4158 + htab->root.hgot->root.u.def.value;
4160 #ifdef GOT_BIAS
4161 relocation -= GOT_BIAS;
4162 #endif
4164 addend = rel->r_addend;
4166 if (r_type == R_SH_GOTOFF20)
4168 r = install_movi20_field (output_bfd, relocation + addend,
4169 input_bfd, input_section, contents,
4170 rel->r_offset);
4171 break;
4173 else
4174 goto final_link_relocate;
4176 case R_SH_GOTPC:
4177 /* Use global offset table as symbol value. */
4179 BFD_ASSERT (sgotplt != NULL);
4180 relocation = sgotplt->output_section->vma + sgotplt->output_offset;
4182 #ifdef GOT_BIAS
4183 relocation += GOT_BIAS;
4184 #endif
4186 addend = rel->r_addend;
4188 goto final_link_relocate;
4190 case R_SH_PLT32:
4191 /* Relocation is to the entry for this symbol in the
4192 procedure linkage table. */
4194 /* Resolve a PLT reloc against a local symbol directly,
4195 without using the procedure linkage table. */
4196 if (h == NULL)
4197 goto final_link_relocate;
4199 /* We don't want to warn on calls to undefined weak symbols,
4200 as calls to them must be protected by non-NULL tests
4201 anyway, and unprotected calls would invoke undefined
4202 behavior. */
4203 if (h->root.type == bfd_link_hash_undefweak)
4204 check_segment[0] = check_segment[1] = -1;
4206 if (h->forced_local)
4207 goto final_link_relocate;
4209 if (h->plt.offset == (bfd_vma) -1)
4211 /* We didn't make a PLT entry for this symbol. This
4212 happens when statically linking PIC code, or when
4213 using -Bsymbolic. */
4214 goto final_link_relocate;
4217 BFD_ASSERT (splt != NULL);
4218 check_segment[1] = plt_segment;
4219 relocation = (splt->output_section->vma
4220 + splt->output_offset
4221 + h->plt.offset);
4223 addend = rel->r_addend;
4225 goto final_link_relocate;
4227 /* Relocation is to the canonical function descriptor for this
4228 symbol, possibly via the GOT. Initialize the GOT
4229 entry and function descriptor if necessary. */
4230 case R_SH_GOTFUNCDESC:
4231 case R_SH_GOTFUNCDESC20:
4232 case R_SH_FUNCDESC:
4234 int dynindx = -1;
4235 asection *reloc_section;
4236 bfd_vma reloc_offset;
4237 int reloc_type = R_SH_FUNCDESC;
4239 BFD_ASSERT (htab);
4241 check_segment[0] = check_segment[1] = -1;
4243 /* FIXME: See what FRV does for global symbols in the
4244 executable, with --export-dynamic. Do they need ld.so
4245 to allocate official descriptors? See what this code
4246 does. */
4248 relocation = 0;
4249 addend = 0;
4251 if (r_type == R_SH_FUNCDESC)
4253 reloc_section = input_section;
4254 reloc_offset = rel->r_offset;
4256 else
4258 reloc_section = sgot;
4260 if (h != NULL)
4261 reloc_offset = h->got.offset;
4262 else
4264 BFD_ASSERT (local_got_offsets != NULL);
4265 reloc_offset = local_got_offsets[r_symndx];
4267 BFD_ASSERT (reloc_offset != MINUS_ONE);
4269 if (reloc_offset & 1)
4271 reloc_offset &= ~1;
4272 goto funcdesc_done_got;
4276 if (h && h->root.type == bfd_link_hash_undefweak
4277 && (SYMBOL_CALLS_LOCAL (info, h)
4278 || !htab->root.dynamic_sections_created))
4279 /* Undefined weak symbol which will not be dynamically
4280 resolved later; leave it at zero. */
4281 goto funcdesc_leave_zero;
4282 else if (SYMBOL_CALLS_LOCAL (info, h)
4283 && ! SYMBOL_FUNCDESC_LOCAL (info, h))
4285 /* If the symbol needs a non-local function descriptor
4286 but binds locally (i.e., its visibility is
4287 protected), emit a dynamic relocation decayed to
4288 section+offset. This is an optimization; the dynamic
4289 linker would resolve our function descriptor request
4290 to our copy of the function anyway. */
4291 dynindx = elf_section_data (h->root.u.def.section
4292 ->output_section)->dynindx;
4293 relocation += h->root.u.def.section->output_offset
4294 + h->root.u.def.value;
4296 else if (! SYMBOL_FUNCDESC_LOCAL (info, h))
4298 /* If the symbol is dynamic and there will be dynamic
4299 symbol resolution because we are or are linked with a
4300 shared library, emit a FUNCDESC relocation such that
4301 the dynamic linker will allocate the function
4302 descriptor. */
4303 BFD_ASSERT (h->dynindx != -1);
4304 dynindx = h->dynindx;
4306 else
4308 bfd_vma offset;
4310 /* Otherwise, we know we have a private function
4311 descriptor, so reference it directly. */
4312 reloc_type = R_SH_DIR32;
4313 dynindx = elf_section_data (htab->sfuncdesc
4314 ->output_section)->dynindx;
4316 if (h)
4318 offset = sh_elf_hash_entry (h)->funcdesc.offset;
4319 BFD_ASSERT (offset != MINUS_ONE);
4320 if ((offset & 1) == 0)
4322 if (!sh_elf_initialize_funcdesc (output_bfd, info, h,
4323 offset, NULL, 0))
4324 return false;
4325 sh_elf_hash_entry (h)->funcdesc.offset |= 1;
4328 else
4330 union gotref *local_funcdesc;
4332 local_funcdesc = sh_elf_local_funcdesc (input_bfd);
4333 offset = local_funcdesc[r_symndx].offset;
4334 BFD_ASSERT (offset != MINUS_ONE);
4335 if ((offset & 1) == 0)
4337 if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL,
4338 offset, sec,
4339 sym->st_value))
4340 return false;
4341 local_funcdesc[r_symndx].offset |= 1;
4345 relocation = htab->sfuncdesc->output_offset + (offset & ~1);
4348 if (!bfd_link_pic (info) && SYMBOL_FUNCDESC_LOCAL (info, h))
4350 bfd_vma offset;
4352 if (sh_elf_osec_readonly_p (output_bfd,
4353 reloc_section->output_section))
4355 _bfd_error_handler
4356 /* xgettext:c-format */
4357 (_("%pB(%pA+%#" PRIx64 "): "
4358 "cannot emit fixup to `%s' in read-only section"),
4359 input_bfd,
4360 input_section,
4361 (uint64_t) rel->r_offset,
4362 symname);
4363 return false;
4366 offset = _bfd_elf_section_offset (output_bfd, info,
4367 reloc_section, reloc_offset);
4369 if (offset != (bfd_vma)-1)
4370 sh_elf_add_rofixup (output_bfd, htab->srofixup,
4371 offset
4372 + reloc_section->output_section->vma
4373 + reloc_section->output_offset);
4375 else if ((reloc_section->output_section->flags
4376 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
4378 bfd_vma offset;
4380 if (sh_elf_osec_readonly_p (output_bfd,
4381 reloc_section->output_section))
4383 info->callbacks->warning
4384 (info,
4385 _("cannot emit dynamic relocations in read-only section"),
4386 symname, input_bfd, reloc_section, reloc_offset);
4387 return false;
4390 offset = _bfd_elf_section_offset (output_bfd, info,
4391 reloc_section, reloc_offset);
4393 if (offset != (bfd_vma)-1)
4394 sh_elf_add_dyn_reloc (output_bfd, srelgot,
4395 offset
4396 + reloc_section->output_section->vma
4397 + reloc_section->output_offset,
4398 reloc_type, dynindx, relocation);
4400 if (r_type == R_SH_FUNCDESC)
4402 r = bfd_reloc_ok;
4403 break;
4405 else
4407 relocation = 0;
4408 goto funcdesc_leave_zero;
4412 if (SYMBOL_FUNCDESC_LOCAL (info, h))
4413 relocation += htab->sfuncdesc->output_section->vma;
4414 funcdesc_leave_zero:
4415 if (r_type != R_SH_FUNCDESC)
4417 bfd_put_32 (output_bfd, relocation,
4418 reloc_section->contents + reloc_offset);
4419 if (h != NULL)
4420 h->got.offset |= 1;
4421 else
4422 local_got_offsets[r_symndx] |= 1;
4424 funcdesc_done_got:
4426 relocation = sh_elf_got_offset (htab) + reloc_offset;
4427 #ifdef GOT_BIAS
4428 relocation -= GOT_BIAS;
4429 #endif
4431 if (r_type == R_SH_GOTFUNCDESC20)
4433 r = install_movi20_field (output_bfd, relocation + addend,
4434 input_bfd, input_section, contents,
4435 rel->r_offset);
4436 break;
4438 else
4439 goto final_link_relocate;
4441 break;
4443 case R_SH_GOTOFFFUNCDESC:
4444 case R_SH_GOTOFFFUNCDESC20:
4445 /* FIXME: See R_SH_FUNCDESC comment about global symbols in the
4446 executable and --export-dynamic. If such symbols get
4447 ld.so-allocated descriptors we can not use R_SH_GOTOFFFUNCDESC
4448 for them. */
4449 BFD_ASSERT (htab);
4451 check_segment[0] = check_segment[1] = -1;
4452 relocation = 0;
4453 addend = rel->r_addend;
4455 if (h && (h->root.type == bfd_link_hash_undefweak
4456 || !SYMBOL_FUNCDESC_LOCAL (info, h)))
4458 _bfd_error_handler
4459 /* xgettext:c-format */
4460 (_("%pB(%pA+%#" PRIx64 "): "
4461 "%s relocation against external symbol \"%s\""),
4462 input_bfd, input_section, (uint64_t) rel->r_offset,
4463 howto->name, h->root.root.string);
4464 return false;
4466 else
4468 bfd_vma offset;
4470 /* Otherwise, we know we have a private function
4471 descriptor, so reference it directly. */
4472 if (h)
4474 offset = sh_elf_hash_entry (h)->funcdesc.offset;
4475 BFD_ASSERT (offset != MINUS_ONE);
4476 if ((offset & 1) == 0)
4478 if (!sh_elf_initialize_funcdesc (output_bfd, info, h,
4479 offset, NULL, 0))
4480 return false;
4481 sh_elf_hash_entry (h)->funcdesc.offset |= 1;
4484 else
4486 union gotref *local_funcdesc;
4488 local_funcdesc = sh_elf_local_funcdesc (input_bfd);
4489 offset = local_funcdesc[r_symndx].offset;
4490 BFD_ASSERT (offset != MINUS_ONE);
4491 if ((offset & 1) == 0)
4493 if (!sh_elf_initialize_funcdesc (output_bfd, info, NULL,
4494 offset, sec,
4495 sym->st_value))
4496 return false;
4497 local_funcdesc[r_symndx].offset |= 1;
4501 relocation = htab->sfuncdesc->output_offset + (offset & ~1);
4504 relocation -= (htab->root.hgot->root.u.def.value
4505 + sgotplt->output_offset);
4506 #ifdef GOT_BIAS
4507 relocation -= GOT_BIAS;
4508 #endif
4510 if (r_type == R_SH_GOTOFFFUNCDESC20)
4512 r = install_movi20_field (output_bfd, relocation + addend,
4513 input_bfd, input_section, contents,
4514 rel->r_offset);
4515 break;
4517 else
4518 goto final_link_relocate;
4520 case R_SH_LOOP_START:
4522 static bfd_vma start, end;
4524 start = (relocation + rel->r_addend
4525 - (sec->output_section->vma + sec->output_offset));
4526 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
4527 rel->r_offset, sec, start, end);
4528 break;
4530 case R_SH_LOOP_END:
4531 end = (relocation + rel->r_addend
4532 - (sec->output_section->vma + sec->output_offset));
4533 r = sh_elf_reloc_loop (r_type, input_bfd, input_section, contents,
4534 rel->r_offset, sec, start, end);
4535 break;
4538 case R_SH_TLS_GD_32:
4539 case R_SH_TLS_IE_32:
4540 BFD_ASSERT (htab);
4541 check_segment[0] = check_segment[1] = -1;
4542 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
4543 got_type = GOT_UNKNOWN;
4544 if (h == NULL && local_got_offsets)
4545 got_type = sh_elf_local_got_type (input_bfd) [r_symndx];
4546 else if (h != NULL)
4548 got_type = sh_elf_hash_entry (h)->got_type;
4549 if (! bfd_link_pic (info)
4550 && (h->dynindx == -1
4551 || h->def_regular))
4552 r_type = R_SH_TLS_LE_32;
4555 if (r_type == R_SH_TLS_GD_32 && got_type == GOT_TLS_IE)
4556 r_type = R_SH_TLS_IE_32;
4558 if (r_type == R_SH_TLS_LE_32)
4560 bfd_vma offset;
4561 unsigned short insn;
4563 if (ELF32_R_TYPE (rel->r_info) == R_SH_TLS_GD_32)
4565 /* GD->LE transition:
4566 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4567 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4568 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4569 We change it into:
4570 mov.l 1f,r4; stc gbr,r0; add r4,r0; nop;
4571 nop; nop; ...
4572 1: .long x@TPOFF; 2: .long __tls_get_addr@PLT; 3:. */
4574 offset = rel->r_offset;
4575 if (offset < 16)
4577 _bfd_error_handler
4578 /* xgettext:c-format */
4579 (_("%pB(%pA): offset in relocation for GD->LE translation is too small: %#" PRIx64),
4580 input_bfd, input_section, (uint64_t) offset);
4581 return false;
4584 /* Size of GD instructions is 16 or 18. */
4585 offset -= 16;
4586 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4587 if ((insn & 0xff00) == 0xc700)
4589 BFD_ASSERT (offset >= 2);
4590 offset -= 2;
4591 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4594 if ((insn & 0xff00) != 0xd400)
4595 _bfd_error_handler
4596 /* xgettext:c-format */ /* The backslash is to prevent bogus trigraph detection. */
4597 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd4?\?)"),
4598 input_bfd, input_section, (uint64_t) offset, (int) insn);
4600 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4602 if ((insn & 0xff00) != 0xc700)
4603 _bfd_error_handler
4604 /* xgettext:c-format */
4605 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xc7?\?)"),
4606 input_bfd, input_section, (uint64_t) offset, (int) insn);
4608 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4609 if ((insn & 0xff00) != 0xd100)
4610 _bfd_error_handler
4611 /* xgettext:c-format */
4612 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd1?\?)"),
4613 input_bfd, input_section, (uint64_t) offset, (int) insn);
4615 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4616 if (insn != 0x310c)
4617 _bfd_error_handler
4618 /* xgettext:c-format */
4619 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x310c)"),
4620 input_bfd, input_section, (uint64_t) offset, (int) insn);
4622 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4623 if (insn != 0x410b)
4624 _bfd_error_handler
4625 /* xgettext:c-format */
4626 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x410b)"),
4627 input_bfd, input_section, (uint64_t) offset, (int) insn);
4629 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4630 if (insn != 0x34cc)
4631 _bfd_error_handler
4632 /* xgettext:c-format */
4633 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x34cc)"),
4634 input_bfd, input_section, (uint64_t) offset, (int) insn);
4636 bfd_put_16 (output_bfd, 0x0012, contents + offset + 2);
4637 bfd_put_16 (output_bfd, 0x304c, contents + offset + 4);
4638 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4639 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4640 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4642 else
4644 int target;
4646 /* IE->LE transition:
4647 mov.l 1f,r0;
4648 stc gbr,rN;
4649 mov.l @(r0,r12),rM;
4650 bra 2f;
4651 add ...;
4652 .align 2;
4653 1: x@GOTTPOFF;
4655 We change it into:
4656 mov.l .Ln,rM;
4657 stc gbr,rN;
4658 nop;
4659 ...;
4660 1: x@TPOFF;
4661 2:. */
4663 offset = rel->r_offset;
4664 if (offset < 16)
4666 _bfd_error_handler
4667 /* xgettext:c-format */
4668 (_("%pB(%pA): offset in relocation for IE->LE translation is too small: %#" PRIx64),
4669 input_bfd, input_section, (uint64_t) offset);
4670 return false;
4673 /* Size of IE instructions is 10 or 12. */
4674 offset -= 10;
4675 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4676 if ((insn & 0xf0ff) == 0x0012)
4678 BFD_ASSERT (offset >= 2);
4679 offset -= 2;
4680 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4683 if ((insn & 0xff00) != 0xd000)
4684 _bfd_error_handler
4685 /* xgettext:c-format */
4686 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0xd0??: mov.l)"),
4687 input_bfd, input_section, (uint64_t) offset, (int) insn);
4689 target = insn & 0x00ff;
4691 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4692 if ((insn & 0xf0ff) != 0x0012)
4693 _bfd_error_handler
4694 /* xgettext:c-format */
4695 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x0?12: stc)"),
4696 input_bfd, input_section, (uint64_t) (offset + 2), (int) insn);
4698 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4699 if ((insn & 0xf0ff) != 0x00ce)
4700 _bfd_error_handler
4701 /* xgettext:c-format */
4702 (_("%pB(%pA+%#" PRIx64 "): unexpected instruction %#04X (expected 0x0?ce: mov.l)"),
4703 input_bfd, input_section, (uint64_t) (offset + 4), (int) insn);
4705 insn = 0xd000 | (insn & 0x0f00) | target;
4706 bfd_put_16 (output_bfd, insn, contents + offset + 0);
4707 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4710 bfd_put_32 (output_bfd, tpoff (info, relocation),
4711 contents + rel->r_offset);
4712 continue;
4715 if (sgot == NULL || sgotplt == NULL)
4716 abort ();
4718 if (h != NULL)
4719 off = h->got.offset;
4720 else
4722 if (local_got_offsets == NULL)
4723 abort ();
4725 off = local_got_offsets[r_symndx];
4728 /* Relocate R_SH_TLS_IE_32 directly when statically linking. */
4729 if (r_type == R_SH_TLS_IE_32
4730 && ! htab->root.dynamic_sections_created)
4732 off &= ~1;
4733 bfd_put_32 (output_bfd, tpoff (info, relocation),
4734 sgot->contents + off);
4735 bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off,
4736 contents + rel->r_offset);
4737 continue;
4740 if ((off & 1) != 0)
4741 off &= ~1;
4742 else
4744 Elf_Internal_Rela outrel;
4745 bfd_byte *loc;
4746 int dr_type, indx;
4748 outrel.r_offset = (sgot->output_section->vma
4749 + sgot->output_offset + off);
4751 if (h == NULL || h->dynindx == -1)
4752 indx = 0;
4753 else
4754 indx = h->dynindx;
4756 dr_type = (r_type == R_SH_TLS_GD_32 ? R_SH_TLS_DTPMOD32 :
4757 R_SH_TLS_TPOFF32);
4758 if (dr_type == R_SH_TLS_TPOFF32 && indx == 0)
4759 outrel.r_addend = relocation - dtpoff_base (info);
4760 else
4761 outrel.r_addend = 0;
4762 outrel.r_info = ELF32_R_INFO (indx, dr_type);
4763 loc = srelgot->contents;
4764 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4765 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4767 if (r_type == R_SH_TLS_GD_32)
4769 if (indx == 0)
4771 bfd_put_32 (output_bfd,
4772 relocation - dtpoff_base (info),
4773 sgot->contents + off + 4);
4775 else
4777 outrel.r_info = ELF32_R_INFO (indx,
4778 R_SH_TLS_DTPOFF32);
4779 outrel.r_offset += 4;
4780 outrel.r_addend = 0;
4781 srelgot->reloc_count++;
4782 loc += sizeof (Elf32_External_Rela);
4783 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4787 if (h != NULL)
4788 h->got.offset |= 1;
4789 else
4790 local_got_offsets[r_symndx] |= 1;
4793 if (off >= (bfd_vma) -2)
4794 abort ();
4796 if (r_type == (int) ELF32_R_TYPE (rel->r_info))
4797 relocation = sh_elf_got_offset (htab) + off;
4798 else
4800 bfd_vma offset;
4801 unsigned short insn;
4803 /* GD->IE transition:
4804 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4805 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4806 1: .long x$TLSGD; 2: .long __tls_get_addr@PLT; 3:
4807 We change it into:
4808 mov.l 1f,r0; stc gbr,r4; mov.l @(r0,r12),r0; add r4,r0;
4809 nop; nop; bra 3f; nop; .align 2;
4810 1: .long x@TPOFF; 2:...; 3:. */
4812 offset = rel->r_offset;
4813 if (offset < 16)
4815 _bfd_error_handler
4816 /* xgettext:c-format */
4817 (_("%pB(%pA): offset in relocation for GD->IE translation is too small: %#" PRIx64),
4818 input_bfd, input_section, (uint64_t) offset);
4819 return false;
4822 /* Size of GD instructions is 16 or 18. */
4823 offset -= 16;
4824 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4825 if ((insn & 0xff00) == 0xc700)
4827 BFD_ASSERT (offset >= 2);
4828 offset -= 2;
4829 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4832 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4834 /* Replace mov.l 1f,R4 with mov.l 1f,r0. */
4835 bfd_put_16 (output_bfd, insn & 0xf0ff, contents + offset);
4837 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4838 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4839 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4840 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4841 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4842 BFD_ASSERT (insn == 0x310c);
4843 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4844 BFD_ASSERT (insn == 0x410b);
4845 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4846 BFD_ASSERT (insn == 0x34cc);
4848 bfd_put_16 (output_bfd, 0x0412, contents + offset + 2);
4849 bfd_put_16 (output_bfd, 0x00ce, contents + offset + 4);
4850 bfd_put_16 (output_bfd, 0x304c, contents + offset + 6);
4851 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4852 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4854 bfd_put_32 (output_bfd, sh_elf_got_offset (htab) + off,
4855 contents + rel->r_offset);
4857 continue;
4860 addend = rel->r_addend;
4862 goto final_link_relocate;
4864 case R_SH_TLS_LD_32:
4865 BFD_ASSERT (htab);
4866 check_segment[0] = check_segment[1] = -1;
4867 if (! bfd_link_pic (info))
4869 bfd_vma offset;
4870 unsigned short insn;
4872 /* LD->LE transition:
4873 mov.l 1f,r4; mova 2f,r0; mov.l 2f,r1; add r0,r1;
4874 jsr @r1; add r12,r4; bra 3f; nop; .align 2;
4875 1: .long x$TLSLD; 2: .long __tls_get_addr@PLT; 3:
4876 We change it into:
4877 stc gbr,r0; nop; nop; nop;
4878 nop; nop; bra 3f; ...; 3:. */
4880 offset = rel->r_offset;
4881 if (offset < 16)
4883 _bfd_error_handler
4884 /* xgettext:c-format */
4885 (_("%pB(%pA): offset in relocation for LD->LE translation is too small: %#" PRIx64),
4886 input_bfd, input_section, (uint64_t) offset);
4887 return false;
4890 /* Size of LD instructions is 16 or 18. */
4891 offset -= 16;
4892 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4893 if ((insn & 0xff00) == 0xc700)
4895 BFD_ASSERT (offset >= 2);
4896 offset -= 2;
4897 insn = bfd_get_16 (input_bfd, contents + offset + 0);
4900 BFD_ASSERT ((insn & 0xff00) == 0xd400);
4901 insn = bfd_get_16 (input_bfd, contents + offset + 2);
4902 BFD_ASSERT ((insn & 0xff00) == 0xc700);
4903 insn = bfd_get_16 (input_bfd, contents + offset + 4);
4904 BFD_ASSERT ((insn & 0xff00) == 0xd100);
4905 insn = bfd_get_16 (input_bfd, contents + offset + 6);
4906 BFD_ASSERT (insn == 0x310c);
4907 insn = bfd_get_16 (input_bfd, contents + offset + 8);
4908 BFD_ASSERT (insn == 0x410b);
4909 insn = bfd_get_16 (input_bfd, contents + offset + 10);
4910 BFD_ASSERT (insn == 0x34cc);
4912 bfd_put_16 (output_bfd, 0x0012, contents + offset + 0);
4913 bfd_put_16 (output_bfd, 0x0009, contents + offset + 2);
4914 bfd_put_16 (output_bfd, 0x0009, contents + offset + 4);
4915 bfd_put_16 (output_bfd, 0x0009, contents + offset + 6);
4916 bfd_put_16 (output_bfd, 0x0009, contents + offset + 8);
4917 bfd_put_16 (output_bfd, 0x0009, contents + offset + 10);
4919 continue;
4922 if (sgot == NULL || sgotplt == NULL)
4923 abort ();
4925 off = htab->tls_ldm_got.offset;
4926 if (off & 1)
4927 off &= ~1;
4928 else
4930 Elf_Internal_Rela outrel;
4931 bfd_byte *loc;
4933 outrel.r_offset = (sgot->output_section->vma
4934 + sgot->output_offset + off);
4935 outrel.r_addend = 0;
4936 outrel.r_info = ELF32_R_INFO (0, R_SH_TLS_DTPMOD32);
4937 loc = srelgot->contents;
4938 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
4939 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4940 htab->tls_ldm_got.offset |= 1;
4943 relocation = sh_elf_got_offset (htab) + off;
4944 addend = rel->r_addend;
4946 goto final_link_relocate;
4948 case R_SH_TLS_LDO_32:
4949 check_segment[0] = check_segment[1] = -1;
4950 if (! bfd_link_pic (info))
4951 relocation = tpoff (info, relocation);
4952 else
4953 relocation -= dtpoff_base (info);
4955 addend = rel->r_addend;
4956 goto final_link_relocate;
4958 case R_SH_TLS_LE_32:
4960 int indx;
4961 Elf_Internal_Rela outrel;
4962 bfd_byte *loc;
4964 check_segment[0] = check_segment[1] = -1;
4966 if (!bfd_link_dll (info))
4968 relocation = tpoff (info, relocation);
4969 addend = rel->r_addend;
4970 goto final_link_relocate;
4973 if (sreloc == NULL)
4975 sreloc = _bfd_elf_get_dynamic_reloc_section
4976 (input_bfd, input_section, /*rela?*/ true);
4977 if (sreloc == NULL)
4978 return false;
4981 if (h == NULL || h->dynindx == -1)
4982 indx = 0;
4983 else
4984 indx = h->dynindx;
4986 outrel.r_offset = (input_section->output_section->vma
4987 + input_section->output_offset
4988 + rel->r_offset);
4989 outrel.r_info = ELF32_R_INFO (indx, R_SH_TLS_TPOFF32);
4990 if (indx == 0)
4991 outrel.r_addend = relocation - dtpoff_base (info);
4992 else
4993 outrel.r_addend = 0;
4995 loc = sreloc->contents;
4996 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
4997 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
4998 continue;
5002 relocation_done:
5003 if (fdpic_p && check_segment[0] != (unsigned) -1
5004 && check_segment[0] != check_segment[1])
5006 /* We don't want duplicate errors for undefined symbols. */
5007 if (!h || h->root.type != bfd_link_hash_undefined)
5009 if (bfd_link_pic (info))
5011 info->callbacks->einfo
5012 /* xgettext:c-format */
5013 (_("%X%H: relocation to \"%s\" references a different segment\n"),
5014 input_bfd, input_section, rel->r_offset, symname);
5015 return false;
5017 else
5018 info->callbacks->einfo
5019 /* xgettext:c-format */
5020 (_("%H: warning: relocation to \"%s\" references a different segment\n"),
5021 input_bfd, input_section, rel->r_offset, symname);
5024 elf_elfheader (output_bfd)->e_flags |= EF_SH_PIC;
5027 if (r != bfd_reloc_ok)
5029 switch (r)
5031 default:
5032 case bfd_reloc_outofrange:
5033 abort ();
5034 case bfd_reloc_overflow:
5036 const char *name;
5038 if (h != NULL)
5039 name = NULL;
5040 else
5042 name = (bfd_elf_string_from_elf_section
5043 (input_bfd, symtab_hdr->sh_link, sym->st_name));
5044 if (name == NULL)
5045 return false;
5046 if (*name == '\0')
5047 name = bfd_section_name (sec);
5049 (*info->callbacks->reloc_overflow)
5050 (info, (h ? &h->root : NULL), name, howto->name,
5051 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
5053 break;
5058 return true;
5061 /* This is a version of bfd_generic_get_relocated_section_contents
5062 which uses sh_elf_relocate_section. */
5064 static bfd_byte *
5065 sh_elf_get_relocated_section_contents (bfd *output_bfd,
5066 struct bfd_link_info *link_info,
5067 struct bfd_link_order *link_order,
5068 bfd_byte *data,
5069 bool relocatable,
5070 asymbol **symbols)
5072 Elf_Internal_Shdr *symtab_hdr;
5073 asection *input_section = link_order->u.indirect.section;
5074 bfd *input_bfd = input_section->owner;
5075 asection **sections = NULL;
5076 Elf_Internal_Rela *internal_relocs = NULL;
5077 Elf_Internal_Sym *isymbuf = NULL;
5079 /* We only need to handle the case of relaxing, or of having a
5080 particular set of section contents, specially. */
5081 if (relocatable
5082 || elf_section_data (input_section)->this_hdr.contents == NULL)
5083 return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
5084 link_order, data,
5085 relocatable,
5086 symbols);
5088 symtab_hdr = &elf_symtab_hdr (input_bfd);
5090 bfd_byte *orig_data = data;
5091 if (data == NULL)
5093 data = bfd_malloc (input_section->size);
5094 if (data == NULL)
5095 return NULL;
5097 memcpy (data, elf_section_data (input_section)->this_hdr.contents,
5098 (size_t) input_section->size);
5100 if ((input_section->flags & SEC_RELOC) != 0
5101 && input_section->reloc_count > 0)
5103 asection **secpp;
5104 Elf_Internal_Sym *isym, *isymend;
5105 bfd_size_type amt;
5107 internal_relocs = (_bfd_elf_link_read_relocs
5108 (input_bfd, input_section, NULL,
5109 (Elf_Internal_Rela *) NULL, false));
5110 if (internal_relocs == NULL)
5111 goto error_return;
5113 if (symtab_hdr->sh_info != 0)
5115 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5116 if (isymbuf == NULL)
5117 isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
5118 symtab_hdr->sh_info, 0,
5119 NULL, NULL, NULL);
5120 if (isymbuf == NULL)
5121 goto error_return;
5124 amt = symtab_hdr->sh_info;
5125 amt *= sizeof (asection *);
5126 sections = (asection **) bfd_malloc (amt);
5127 if (sections == NULL && amt != 0)
5128 goto error_return;
5130 isymend = isymbuf + symtab_hdr->sh_info;
5131 for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
5133 asection *isec;
5135 if (isym->st_shndx == SHN_UNDEF)
5136 isec = bfd_und_section_ptr;
5137 else if (isym->st_shndx == SHN_ABS)
5138 isec = bfd_abs_section_ptr;
5139 else if (isym->st_shndx == SHN_COMMON)
5140 isec = bfd_com_section_ptr;
5141 else
5142 isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
5144 *secpp = isec;
5147 if (! sh_elf_relocate_section (output_bfd, link_info, input_bfd,
5148 input_section, data, internal_relocs,
5149 isymbuf, sections))
5150 goto error_return;
5152 free (sections);
5153 if (symtab_hdr->contents != (unsigned char *) isymbuf)
5154 free (isymbuf);
5155 if (elf_section_data (input_section)->relocs != internal_relocs)
5156 free (internal_relocs);
5159 return data;
5161 error_return:
5162 free (sections);
5163 if (symtab_hdr->contents != (unsigned char *) isymbuf)
5164 free (isymbuf);
5165 if (elf_section_data (input_section)->relocs != internal_relocs)
5166 free (internal_relocs);
5167 if (orig_data == NULL)
5168 free (data);
5169 return NULL;
5172 /* Return the base VMA address which should be subtracted from real addresses
5173 when resolving @dtpoff relocation.
5174 This is PT_TLS segment p_vaddr. */
5176 static bfd_vma
5177 dtpoff_base (struct bfd_link_info *info)
5179 /* If tls_sec is NULL, we should have signalled an error already. */
5180 if (elf_hash_table (info)->tls_sec == NULL)
5181 return 0;
5182 return elf_hash_table (info)->tls_sec->vma;
5185 /* Return the relocation value for R_SH_TLS_TPOFF32.. */
5187 static bfd_vma
5188 tpoff (struct bfd_link_info *info, bfd_vma address)
5190 /* If tls_sec is NULL, we should have signalled an error already. */
5191 if (elf_hash_table (info)->tls_sec == NULL)
5192 return 0;
5193 /* SH TLS ABI is variant I and static TLS block start just after tcbhead
5194 structure which has 2 pointer fields. */
5195 return (address - elf_hash_table (info)->tls_sec->vma
5196 + align_power ((bfd_vma) 8,
5197 elf_hash_table (info)->tls_sec->alignment_power));
5200 static asection *
5201 sh_elf_gc_mark_hook (asection *sec,
5202 struct bfd_link_info *info,
5203 Elf_Internal_Rela *rel,
5204 struct elf_link_hash_entry *h,
5205 Elf_Internal_Sym *sym)
5207 if (h != NULL)
5208 switch (ELF32_R_TYPE (rel->r_info))
5210 case R_SH_GNU_VTINHERIT:
5211 case R_SH_GNU_VTENTRY:
5212 return NULL;
5215 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
5218 /* Copy the extra info we tack onto an elf_link_hash_entry. */
5220 static void
5221 sh_elf_copy_indirect_symbol (struct bfd_link_info *info,
5222 struct elf_link_hash_entry *dir,
5223 struct elf_link_hash_entry *ind)
5225 struct elf_sh_link_hash_entry *edir, *eind;
5227 edir = (struct elf_sh_link_hash_entry *) dir;
5228 eind = (struct elf_sh_link_hash_entry *) ind;
5230 edir->gotplt_refcount = eind->gotplt_refcount;
5231 eind->gotplt_refcount = 0;
5232 edir->funcdesc.refcount += eind->funcdesc.refcount;
5233 eind->funcdesc.refcount = 0;
5234 edir->abs_funcdesc_refcount += eind->abs_funcdesc_refcount;
5235 eind->abs_funcdesc_refcount = 0;
5237 if (ind->root.type == bfd_link_hash_indirect
5238 && dir->got.refcount <= 0)
5240 edir->got_type = eind->got_type;
5241 eind->got_type = GOT_UNKNOWN;
5244 if (ind->root.type != bfd_link_hash_indirect
5245 && dir->dynamic_adjusted)
5247 /* If called to transfer flags for a weakdef during processing
5248 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
5249 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
5250 if (dir->versioned != versioned_hidden)
5251 dir->ref_dynamic |= ind->ref_dynamic;
5252 dir->ref_regular |= ind->ref_regular;
5253 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
5254 dir->needs_plt |= ind->needs_plt;
5256 else
5257 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
5260 static int
5261 sh_elf_optimized_tls_reloc (struct bfd_link_info *info, int r_type,
5262 int is_local)
5264 if (bfd_link_pic (info))
5265 return r_type;
5267 switch (r_type)
5269 case R_SH_TLS_GD_32:
5270 case R_SH_TLS_IE_32:
5271 if (is_local)
5272 return R_SH_TLS_LE_32;
5273 return R_SH_TLS_IE_32;
5274 case R_SH_TLS_LD_32:
5275 return R_SH_TLS_LE_32;
5278 return r_type;
5281 /* Look through the relocs for a section during the first phase.
5282 Since we don't do .gots or .plts, we just need to consider the
5283 virtual table relocs for gc. */
5285 static bool
5286 sh_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
5287 const Elf_Internal_Rela *relocs)
5289 Elf_Internal_Shdr *symtab_hdr;
5290 struct elf_link_hash_entry **sym_hashes;
5291 struct elf_sh_link_hash_table *htab;
5292 const Elf_Internal_Rela *rel;
5293 const Elf_Internal_Rela *rel_end;
5294 asection *sreloc;
5295 unsigned int r_type;
5296 enum got_type got_type, old_got_type;
5298 sreloc = NULL;
5300 if (bfd_link_relocatable (info))
5301 return true;
5303 BFD_ASSERT (is_sh_elf (abfd));
5305 symtab_hdr = &elf_symtab_hdr (abfd);
5306 sym_hashes = elf_sym_hashes (abfd);
5308 htab = sh_elf_hash_table (info);
5309 if (htab == NULL)
5310 return false;
5312 rel_end = relocs + sec->reloc_count;
5313 for (rel = relocs; rel < rel_end; rel++)
5315 struct elf_link_hash_entry *h;
5316 unsigned long r_symndx;
5318 r_symndx = ELF32_R_SYM (rel->r_info);
5319 r_type = ELF32_R_TYPE (rel->r_info);
5321 if (r_symndx < symtab_hdr->sh_info)
5322 h = NULL;
5323 else
5325 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5326 while (h->root.type == bfd_link_hash_indirect
5327 || h->root.type == bfd_link_hash_warning)
5328 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5331 r_type = sh_elf_optimized_tls_reloc (info, r_type, h == NULL);
5332 if (! bfd_link_pic (info)
5333 && r_type == R_SH_TLS_IE_32
5334 && h != NULL
5335 && h->root.type != bfd_link_hash_undefined
5336 && h->root.type != bfd_link_hash_undefweak
5337 && (h->dynindx == -1
5338 || h->def_regular))
5339 r_type = R_SH_TLS_LE_32;
5341 if (htab->fdpic_p)
5342 switch (r_type)
5344 case R_SH_GOTOFFFUNCDESC:
5345 case R_SH_GOTOFFFUNCDESC20:
5346 case R_SH_FUNCDESC:
5347 case R_SH_GOTFUNCDESC:
5348 case R_SH_GOTFUNCDESC20:
5349 if (h != NULL)
5351 if (h->dynindx == -1)
5352 switch (ELF_ST_VISIBILITY (h->other))
5354 case STV_INTERNAL:
5355 case STV_HIDDEN:
5356 break;
5357 default:
5358 bfd_elf_link_record_dynamic_symbol (info, h);
5359 break;
5362 break;
5365 /* Some relocs require a global offset table. */
5366 if (htab->root.sgot == NULL)
5368 switch (r_type)
5370 case R_SH_DIR32:
5371 /* This may require an rofixup. */
5372 if (!htab->fdpic_p)
5373 break;
5374 /* Fall through. */
5375 case R_SH_GOTPLT32:
5376 case R_SH_GOT32:
5377 case R_SH_GOT20:
5378 case R_SH_GOTOFF:
5379 case R_SH_GOTOFF20:
5380 case R_SH_FUNCDESC:
5381 case R_SH_GOTFUNCDESC:
5382 case R_SH_GOTFUNCDESC20:
5383 case R_SH_GOTOFFFUNCDESC:
5384 case R_SH_GOTOFFFUNCDESC20:
5385 case R_SH_GOTPC:
5386 case R_SH_TLS_GD_32:
5387 case R_SH_TLS_LD_32:
5388 case R_SH_TLS_IE_32:
5389 if (htab->root.dynobj == NULL)
5390 htab->root.dynobj = abfd;
5391 if (!create_got_section (htab->root.dynobj, info))
5392 return false;
5393 break;
5395 default:
5396 break;
5400 switch (r_type)
5402 /* This relocation describes the C++ object vtable hierarchy.
5403 Reconstruct it for later use during GC. */
5404 case R_SH_GNU_VTINHERIT:
5405 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
5406 return false;
5407 break;
5409 /* This relocation describes which C++ vtable entries are actually
5410 used. Record for later use during GC. */
5411 case R_SH_GNU_VTENTRY:
5412 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
5413 return false;
5414 break;
5416 case R_SH_TLS_IE_32:
5417 if (bfd_link_pic (info))
5418 info->flags |= DF_STATIC_TLS;
5420 /* FALLTHROUGH */
5421 force_got:
5422 case R_SH_TLS_GD_32:
5423 case R_SH_GOT32:
5424 case R_SH_GOT20:
5425 case R_SH_GOTFUNCDESC:
5426 case R_SH_GOTFUNCDESC20:
5427 switch (r_type)
5429 default:
5430 got_type = GOT_NORMAL;
5431 break;
5432 case R_SH_TLS_GD_32:
5433 got_type = GOT_TLS_GD;
5434 break;
5435 case R_SH_TLS_IE_32:
5436 got_type = GOT_TLS_IE;
5437 break;
5438 case R_SH_GOTFUNCDESC:
5439 case R_SH_GOTFUNCDESC20:
5440 got_type = GOT_FUNCDESC;
5441 break;
5444 if (h != NULL)
5446 h->got.refcount += 1;
5447 old_got_type = sh_elf_hash_entry (h)->got_type;
5449 else
5451 bfd_signed_vma *local_got_refcounts;
5453 /* This is a global offset table entry for a local
5454 symbol. */
5455 local_got_refcounts = elf_local_got_refcounts (abfd);
5456 if (local_got_refcounts == NULL)
5458 bfd_size_type size;
5460 size = symtab_hdr->sh_info;
5461 size *= sizeof (bfd_signed_vma);
5462 size += symtab_hdr->sh_info;
5463 local_got_refcounts = ((bfd_signed_vma *)
5464 bfd_zalloc (abfd, size));
5465 if (local_got_refcounts == NULL)
5466 return false;
5467 elf_local_got_refcounts (abfd) = local_got_refcounts;
5468 sh_elf_local_got_type (abfd)
5469 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
5471 local_got_refcounts[r_symndx] += 1;
5472 old_got_type = sh_elf_local_got_type (abfd) [r_symndx];
5475 /* If a TLS symbol is accessed using IE at least once,
5476 there is no point to use dynamic model for it. */
5477 if (old_got_type != got_type && old_got_type != GOT_UNKNOWN
5478 && (old_got_type != GOT_TLS_GD || got_type != GOT_TLS_IE))
5480 if (old_got_type == GOT_TLS_IE && got_type == GOT_TLS_GD)
5481 got_type = GOT_TLS_IE;
5482 else
5484 if ((old_got_type == GOT_FUNCDESC || got_type == GOT_FUNCDESC)
5485 && (old_got_type == GOT_NORMAL || got_type == GOT_NORMAL))
5486 _bfd_error_handler
5487 /* xgettext:c-format */
5488 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5489 abfd, h->root.root.string);
5490 else if (old_got_type == GOT_FUNCDESC
5491 || got_type == GOT_FUNCDESC)
5492 _bfd_error_handler
5493 /* xgettext:c-format */
5494 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5495 abfd, h->root.root.string);
5496 else
5497 _bfd_error_handler
5498 /* xgettext:c-format */
5499 (_("%pB: `%s' accessed both as normal and thread local symbol"),
5500 abfd, h->root.root.string);
5501 return false;
5505 if (old_got_type != got_type)
5507 if (h != NULL)
5508 sh_elf_hash_entry (h)->got_type = got_type;
5509 else
5510 sh_elf_local_got_type (abfd) [r_symndx] = got_type;
5513 break;
5515 case R_SH_TLS_LD_32:
5516 sh_elf_hash_table(info)->tls_ldm_got.refcount += 1;
5517 break;
5519 case R_SH_FUNCDESC:
5520 case R_SH_GOTOFFFUNCDESC:
5521 case R_SH_GOTOFFFUNCDESC20:
5522 if (rel->r_addend)
5524 _bfd_error_handler
5525 (_("%pB: Function descriptor relocation with non-zero addend"),
5526 abfd);
5527 return false;
5530 if (h == NULL)
5532 union gotref *local_funcdesc;
5534 /* We need a function descriptor for a local symbol. */
5535 local_funcdesc = sh_elf_local_funcdesc (abfd);
5536 if (local_funcdesc == NULL)
5538 bfd_size_type size;
5540 size = symtab_hdr->sh_info * sizeof (union gotref);
5541 local_funcdesc = (union gotref *) bfd_zalloc (abfd, size);
5542 if (local_funcdesc == NULL)
5543 return false;
5544 sh_elf_local_funcdesc (abfd) = local_funcdesc;
5546 local_funcdesc[r_symndx].refcount += 1;
5548 if (r_type == R_SH_FUNCDESC)
5550 if (!bfd_link_pic (info))
5551 htab->srofixup->size += 4;
5552 else
5553 htab->root.srelgot->size += sizeof (Elf32_External_Rela);
5556 else
5558 sh_elf_hash_entry (h)->funcdesc.refcount++;
5559 if (r_type == R_SH_FUNCDESC)
5560 sh_elf_hash_entry (h)->abs_funcdesc_refcount++;
5562 /* If there is a function descriptor reference, then
5563 there should not be any non-FDPIC references. */
5564 old_got_type = sh_elf_hash_entry (h)->got_type;
5565 if (old_got_type != GOT_FUNCDESC && old_got_type != GOT_UNKNOWN)
5567 if (old_got_type == GOT_NORMAL)
5568 _bfd_error_handler
5569 /* xgettext:c-format */
5570 (_("%pB: `%s' accessed both as normal and FDPIC symbol"),
5571 abfd, h->root.root.string);
5572 else
5573 _bfd_error_handler
5574 /* xgettext:c-format */
5575 (_("%pB: `%s' accessed both as FDPIC and thread local symbol"),
5576 abfd, h->root.root.string);
5579 break;
5581 case R_SH_GOTPLT32:
5582 /* If this is a local symbol, we resolve it directly without
5583 creating a procedure linkage table entry. */
5585 if (h == NULL
5586 || h->forced_local
5587 || ! bfd_link_pic (info)
5588 || info->symbolic
5589 || h->dynindx == -1)
5590 goto force_got;
5592 h->needs_plt = 1;
5593 h->plt.refcount += 1;
5594 ((struct elf_sh_link_hash_entry *) h)->gotplt_refcount += 1;
5596 break;
5598 case R_SH_PLT32:
5599 /* This symbol requires a procedure linkage table entry. We
5600 actually build the entry in adjust_dynamic_symbol,
5601 because this might be a case of linking PIC code which is
5602 never referenced by a dynamic object, in which case we
5603 don't need to generate a procedure linkage table entry
5604 after all. */
5606 /* If this is a local symbol, we resolve it directly without
5607 creating a procedure linkage table entry. */
5608 if (h == NULL)
5609 continue;
5611 if (h->forced_local)
5612 break;
5614 h->needs_plt = 1;
5615 h->plt.refcount += 1;
5616 break;
5618 case R_SH_DIR32:
5619 case R_SH_REL32:
5620 if (h != NULL && ! bfd_link_pic (info))
5622 h->non_got_ref = 1;
5623 h->plt.refcount += 1;
5626 /* If we are creating a shared library, and this is a reloc
5627 against a global symbol, or a non PC relative reloc
5628 against a local symbol, then we need to copy the reloc
5629 into the shared library. However, if we are linking with
5630 -Bsymbolic, we do not need to copy a reloc against a
5631 global symbol which is defined in an object we are
5632 including in the link (i.e., DEF_REGULAR is set). At
5633 this point we have not seen all the input files, so it is
5634 possible that DEF_REGULAR is not set now but will be set
5635 later (it is never cleared). We account for that
5636 possibility below by storing information in the
5637 dyn_relocs field of the hash table entry. A similar
5638 situation occurs when creating shared libraries and symbol
5639 visibility changes render the symbol local.
5641 If on the other hand, we are creating an executable, we
5642 may need to keep relocations for symbols satisfied by a
5643 dynamic library if we manage to avoid copy relocs for the
5644 symbol. */
5645 if ((bfd_link_pic (info)
5646 && (sec->flags & SEC_ALLOC) != 0
5647 && (r_type != R_SH_REL32
5648 || (h != NULL
5649 && (! info->symbolic
5650 || h->root.type == bfd_link_hash_defweak
5651 || !h->def_regular))))
5652 || (! bfd_link_pic (info)
5653 && (sec->flags & SEC_ALLOC) != 0
5654 && h != NULL
5655 && (h->root.type == bfd_link_hash_defweak
5656 || !h->def_regular)))
5658 struct elf_dyn_relocs *p;
5659 struct elf_dyn_relocs **head;
5661 if (htab->root.dynobj == NULL)
5662 htab->root.dynobj = abfd;
5664 /* When creating a shared object, we must copy these
5665 reloc types into the output file. We create a reloc
5666 section in dynobj and make room for this reloc. */
5667 if (sreloc == NULL)
5669 sreloc = _bfd_elf_make_dynamic_reloc_section
5670 (sec, htab->root.dynobj, 2, abfd, /*rela?*/ true);
5672 if (sreloc == NULL)
5673 return false;
5676 /* If this is a global symbol, we count the number of
5677 relocations we need for this symbol. */
5678 if (h != NULL)
5679 head = &h->dyn_relocs;
5680 else
5682 /* Track dynamic relocs needed for local syms too. */
5683 asection *s;
5684 void *vpp;
5685 Elf_Internal_Sym *isym;
5687 isym = bfd_sym_from_r_symndx (&htab->root.sym_cache,
5688 abfd, r_symndx);
5689 if (isym == NULL)
5690 return false;
5692 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
5693 if (s == NULL)
5694 s = sec;
5696 vpp = &elf_section_data (s)->local_dynrel;
5697 head = (struct elf_dyn_relocs **) vpp;
5700 p = *head;
5701 if (p == NULL || p->sec != sec)
5703 size_t amt = sizeof (*p);
5704 p = bfd_alloc (htab->root.dynobj, amt);
5705 if (p == NULL)
5706 return false;
5707 p->next = *head;
5708 *head = p;
5709 p->sec = sec;
5710 p->count = 0;
5711 p->pc_count = 0;
5714 p->count += 1;
5715 if (r_type == R_SH_REL32)
5716 p->pc_count += 1;
5719 /* Allocate the fixup regardless of whether we need a relocation.
5720 If we end up generating the relocation, we'll unallocate the
5721 fixup. */
5722 if (htab->fdpic_p && !bfd_link_pic (info)
5723 && r_type == R_SH_DIR32
5724 && (sec->flags & SEC_ALLOC) != 0)
5725 htab->srofixup->size += 4;
5726 break;
5728 case R_SH_TLS_LE_32:
5729 if (bfd_link_dll (info))
5731 _bfd_error_handler
5732 (_("%pB: TLS local exec code cannot be linked into shared objects"),
5733 abfd);
5734 return false;
5737 break;
5739 case R_SH_TLS_LDO_32:
5740 /* Nothing to do. */
5741 break;
5743 default:
5744 break;
5748 return true;
5751 #ifndef sh_elf_set_mach_from_flags
5752 static unsigned int sh_ef_bfd_table[] = { EF_SH_BFD_TABLE };
5754 static bool
5755 sh_elf_set_mach_from_flags (bfd *abfd)
5757 flagword flags = elf_elfheader (abfd)->e_flags & EF_SH_MACH_MASK;
5759 if (flags >= ARRAY_SIZE (sh_ef_bfd_table))
5760 return false;
5762 if (sh_ef_bfd_table[flags] == 0)
5763 return false;
5765 bfd_default_set_arch_mach (abfd, bfd_arch_sh, sh_ef_bfd_table[flags]);
5767 return true;
5771 /* Reverse table lookup for sh_ef_bfd_table[].
5772 Given a bfd MACH value from archures.c
5773 return the equivalent ELF flags from the table.
5774 Return -1 if no match is found. */
5777 sh_elf_get_flags_from_mach (unsigned long mach)
5779 int i = ARRAY_SIZE (sh_ef_bfd_table) - 1;
5781 for (; i>0; i--)
5782 if (sh_ef_bfd_table[i] == mach)
5783 return i;
5785 /* shouldn't get here */
5786 BFD_FAIL();
5788 return -1;
5790 #endif /* not sh_elf_set_mach_from_flags */
5792 #ifndef sh_elf_copy_private_data
5793 /* Copy backend specific data from one object module to another */
5795 static bool
5796 sh_elf_copy_private_data (bfd * ibfd, bfd * obfd)
5798 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5799 return true;
5801 if (! _bfd_elf_copy_private_bfd_data (ibfd, obfd))
5802 return false;
5804 return sh_elf_set_mach_from_flags (obfd);
5806 #endif /* not sh_elf_copy_private_data */
5808 #ifndef sh_elf_merge_private_data
5810 /* This function returns the ELF architecture number that
5811 corresponds to the given arch_sh* flags. */
5814 sh_find_elf_flags (unsigned int arch_set)
5816 extern unsigned long sh_get_bfd_mach_from_arch_set (unsigned int);
5817 unsigned long bfd_mach = sh_get_bfd_mach_from_arch_set (arch_set);
5819 return sh_elf_get_flags_from_mach (bfd_mach);
5822 /* Merge the architecture type of two BFD files, such that the
5823 resultant architecture supports all the features required
5824 by the two input BFDs.
5825 If the input BFDs are multually incompatible - i.e. one uses
5826 DSP while the other uses FPU - or there is no known architecture
5827 that fits the requirements then an error is emitted. */
5829 static bool
5830 sh_merge_bfd_arch (bfd *ibfd, struct bfd_link_info *info)
5832 bfd *obfd = info->output_bfd;
5833 unsigned int old_arch, new_arch, merged_arch;
5835 if (! _bfd_generic_verify_endian_match (ibfd, info))
5836 return false;
5838 old_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (obfd));
5839 new_arch = sh_get_arch_up_from_bfd_mach (bfd_get_mach (ibfd));
5841 merged_arch = SH_MERGE_ARCH_SET (old_arch, new_arch);
5843 if (!SH_VALID_CO_ARCH_SET (merged_arch))
5845 _bfd_error_handler
5846 /* xgettext:c-format */
5847 (_("%pB: uses %s instructions while previous modules "
5848 "use %s instructions"),
5849 ibfd,
5850 SH_ARCH_SET_HAS_DSP (new_arch) ? "dsp" : "floating point",
5851 SH_ARCH_SET_HAS_DSP (new_arch) ? "floating point" : "dsp");
5852 bfd_set_error (bfd_error_bad_value);
5853 return false;
5855 else if (!SH_VALID_ARCH_SET (merged_arch))
5857 _bfd_error_handler
5858 /* xgettext:c-format */
5859 (_("internal error: merge of architecture '%s' with "
5860 "architecture '%s' produced unknown architecture"),
5861 bfd_printable_name (obfd),
5862 bfd_printable_name (ibfd));
5863 bfd_set_error (bfd_error_bad_value);
5864 return false;
5867 bfd_default_set_arch_mach (obfd, bfd_arch_sh,
5868 sh_get_bfd_mach_from_arch_set (merged_arch));
5870 return true;
5873 /* This routine initialises the elf flags when required and
5874 calls sh_merge_bfd_arch() to check dsp/fpu compatibility. */
5876 static bool
5877 sh_elf_merge_private_data (bfd *ibfd, struct bfd_link_info *info)
5879 bfd *obfd = info->output_bfd;
5881 /* FIXME: What should be checked when linking shared libraries? */
5882 if ((ibfd->flags & DYNAMIC) != 0)
5883 return true;
5885 if (! is_sh_elf (ibfd) || ! is_sh_elf (obfd))
5886 return true;
5888 if (! elf_flags_init (obfd))
5890 /* This happens when ld starts out with a 'blank' output file. */
5891 elf_flags_init (obfd) = true;
5892 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
5893 sh_elf_set_mach_from_flags (obfd);
5894 if (elf_elfheader (obfd)->e_flags & EF_SH_FDPIC)
5895 elf_elfheader (obfd)->e_flags &= ~EF_SH_PIC;
5898 if (! sh_merge_bfd_arch (ibfd, info))
5900 _bfd_error_handler (_("%pB: uses instructions which are incompatible "
5901 "with instructions used in previous modules"),
5902 ibfd);
5903 bfd_set_error (bfd_error_bad_value);
5904 return false;
5907 elf_elfheader (obfd)->e_flags &= ~EF_SH_MACH_MASK;
5908 elf_elfheader (obfd)->e_flags |=
5909 sh_elf_get_flags_from_mach (bfd_get_mach (obfd));
5911 if (fdpic_object_p (ibfd) != fdpic_object_p (obfd))
5913 _bfd_error_handler (_("%pB: attempt to mix FDPIC and non-FDPIC objects"),
5914 ibfd);
5915 bfd_set_error (bfd_error_bad_value);
5916 return false;
5919 return true;
5921 #endif /* not sh_elf_merge_private_data */
5923 /* Override the generic function because we need to store sh_elf_obj_tdata
5924 as the specific tdata. We set also the machine architecture from flags
5925 here. */
5927 static bool
5928 sh_elf_object_p (bfd *abfd)
5930 if (! sh_elf_set_mach_from_flags (abfd))
5931 return false;
5933 return (((elf_elfheader (abfd)->e_flags & EF_SH_FDPIC) != 0)
5934 == fdpic_object_p (abfd));
5937 /* Finish up dynamic symbol handling. We set the contents of various
5938 dynamic sections here. */
5940 static bool
5941 sh_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info,
5942 struct elf_link_hash_entry *h,
5943 Elf_Internal_Sym *sym)
5945 struct elf_sh_link_hash_table *htab;
5947 htab = sh_elf_hash_table (info);
5948 if (htab == NULL)
5949 return false;
5951 if (h->plt.offset != (bfd_vma) -1)
5953 asection *splt;
5954 asection *sgotplt;
5955 asection *srelplt;
5957 bfd_vma plt_index;
5958 bfd_vma got_offset;
5959 Elf_Internal_Rela rel;
5960 bfd_byte *loc;
5961 const struct elf_sh_plt_info *plt_info;
5963 /* This symbol has an entry in the procedure linkage table. Set
5964 it up. */
5966 BFD_ASSERT (h->dynindx != -1);
5968 splt = htab->root.splt;
5969 sgotplt = htab->root.sgotplt;
5970 srelplt = htab->root.srelplt;
5971 BFD_ASSERT (splt != NULL && sgotplt != NULL && srelplt != NULL);
5973 /* Get the index in the procedure linkage table which
5974 corresponds to this symbol. This is the index of this symbol
5975 in all the symbols for which we are making plt entries. The
5976 first entry in the procedure linkage table is reserved. */
5977 plt_index = get_plt_index (htab->plt_info, h->plt.offset);
5979 plt_info = htab->plt_info;
5980 if (plt_info->short_plt != NULL && plt_index <= MAX_SHORT_PLT)
5981 plt_info = plt_info->short_plt;
5983 /* Get the offset into the .got table of the entry that
5984 corresponds to this function. */
5985 if (htab->fdpic_p)
5986 /* The offset must be relative to the GOT symbol, twelve bytes
5987 before the end of .got.plt. Each descriptor is eight
5988 bytes. */
5989 got_offset = plt_index * 8 + 12 - sgotplt->size;
5990 else
5991 /* Each .got entry is 4 bytes. The first three are
5992 reserved. */
5993 got_offset = (plt_index + 3) * 4;
5995 #ifdef GOT_BIAS
5996 if (bfd_link_pic (info))
5997 got_offset -= GOT_BIAS;
5998 #endif
6000 /* Fill in the entry in the procedure linkage table. */
6001 memcpy (splt->contents + h->plt.offset,
6002 plt_info->symbol_entry,
6003 plt_info->symbol_entry_size);
6005 if (bfd_link_pic (info) || htab->fdpic_p)
6007 if (plt_info->symbol_fields.got20)
6009 bfd_reloc_status_type r;
6010 r = install_movi20_field (output_bfd, got_offset,
6011 splt->owner, splt, splt->contents,
6012 h->plt.offset
6013 + plt_info->symbol_fields.got_entry);
6014 BFD_ASSERT (r == bfd_reloc_ok);
6016 else
6017 install_plt_field (output_bfd, false, got_offset,
6018 (splt->contents
6019 + h->plt.offset
6020 + plt_info->symbol_fields.got_entry));
6022 else
6024 BFD_ASSERT (!plt_info->symbol_fields.got20);
6026 install_plt_field (output_bfd, false,
6027 (sgotplt->output_section->vma
6028 + sgotplt->output_offset
6029 + got_offset),
6030 (splt->contents
6031 + h->plt.offset
6032 + plt_info->symbol_fields.got_entry));
6033 if (htab->root.target_os == is_vxworks)
6035 unsigned int reachable_plts, plts_per_4k;
6036 int distance;
6038 /* Divide the PLT into groups. The first group contains
6039 REACHABLE_PLTS entries and the other groups contain
6040 PLTS_PER_4K entries. Entries in the first group can
6041 branch directly to .plt; those in later groups branch
6042 to the last element of the previous group. */
6043 /* ??? It would be better to create multiple copies of
6044 the common resolver stub. */
6045 reachable_plts = ((4096
6046 - plt_info->plt0_entry_size
6047 - (plt_info->symbol_fields.plt + 4))
6048 / plt_info->symbol_entry_size) + 1;
6049 plts_per_4k = (4096 / plt_info->symbol_entry_size);
6050 if (plt_index < reachable_plts)
6051 distance = -(h->plt.offset
6052 + plt_info->symbol_fields.plt);
6053 else
6054 distance = -(((plt_index - reachable_plts) % plts_per_4k + 1)
6055 * plt_info->symbol_entry_size);
6057 /* Install the 'bra' with this offset. */
6058 bfd_put_16 (output_bfd,
6059 0xa000 | (0x0fff & ((distance - 4) / 2)),
6060 (splt->contents
6061 + h->plt.offset
6062 + plt_info->symbol_fields.plt));
6064 else
6065 install_plt_field (output_bfd, true,
6066 splt->output_section->vma + splt->output_offset,
6067 (splt->contents
6068 + h->plt.offset
6069 + plt_info->symbol_fields.plt));
6072 /* Make got_offset relative to the start of .got.plt. */
6073 #ifdef GOT_BIAS
6074 if (bfd_link_pic (info))
6075 got_offset += GOT_BIAS;
6076 #endif
6077 if (htab->fdpic_p)
6078 got_offset = plt_index * 8;
6080 if (plt_info->symbol_fields.reloc_offset != MINUS_ONE)
6081 install_plt_field (output_bfd, false,
6082 plt_index * sizeof (Elf32_External_Rela),
6083 (splt->contents
6084 + h->plt.offset
6085 + plt_info->symbol_fields.reloc_offset));
6087 /* Fill in the entry in the global offset table. */
6088 bfd_put_32 (output_bfd,
6089 (splt->output_section->vma
6090 + splt->output_offset
6091 + h->plt.offset
6092 + plt_info->symbol_resolve_offset),
6093 sgotplt->contents + got_offset);
6094 if (htab->fdpic_p)
6095 bfd_put_32 (output_bfd,
6096 sh_elf_osec_to_segment (output_bfd, splt->output_section),
6097 sgotplt->contents + got_offset + 4);
6099 /* Fill in the entry in the .rela.plt section. */
6100 rel.r_offset = (sgotplt->output_section->vma
6101 + sgotplt->output_offset
6102 + got_offset);
6103 if (htab->fdpic_p)
6104 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_FUNCDESC_VALUE);
6105 else
6106 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_JMP_SLOT);
6107 rel.r_addend = 0;
6108 #ifdef GOT_BIAS
6109 rel.r_addend = GOT_BIAS;
6110 #endif
6111 loc = srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
6112 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6114 if (htab->root.target_os == is_vxworks && !bfd_link_pic (info))
6116 /* Create the .rela.plt.unloaded relocations for this PLT entry.
6117 Begin by pointing LOC to the first such relocation. */
6118 loc = (htab->srelplt2->contents
6119 + (plt_index * 2 + 1) * sizeof (Elf32_External_Rela));
6121 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation
6122 for the PLT entry's pointer to the .got.plt entry. */
6123 rel.r_offset = (splt->output_section->vma
6124 + splt->output_offset
6125 + h->plt.offset
6126 + plt_info->symbol_fields.got_entry);
6127 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
6128 rel.r_addend = got_offset;
6129 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6130 loc += sizeof (Elf32_External_Rela);
6132 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for
6133 the .got.plt entry, which initially points to .plt. */
6134 rel.r_offset = (sgotplt->output_section->vma
6135 + sgotplt->output_offset
6136 + got_offset);
6137 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_SH_DIR32);
6138 rel.r_addend = 0;
6139 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6142 if (!h->def_regular)
6144 /* Mark the symbol as undefined, rather than as defined in
6145 the .plt section. Leave the value alone. */
6146 sym->st_shndx = SHN_UNDEF;
6150 if (h->got.offset != (bfd_vma) -1
6151 && sh_elf_hash_entry (h)->got_type != GOT_TLS_GD
6152 && sh_elf_hash_entry (h)->got_type != GOT_TLS_IE
6153 && sh_elf_hash_entry (h)->got_type != GOT_FUNCDESC)
6155 asection *sgot;
6156 asection *srelgot;
6157 Elf_Internal_Rela rel;
6158 bfd_byte *loc;
6160 /* This symbol has an entry in the global offset table. Set it
6161 up. */
6163 sgot = htab->root.sgot;
6164 srelgot = htab->root.srelgot;
6165 BFD_ASSERT (sgot != NULL && srelgot != NULL);
6167 rel.r_offset = (sgot->output_section->vma
6168 + sgot->output_offset
6169 + (h->got.offset &~ (bfd_vma) 1));
6171 /* If this is a static link, or it is a -Bsymbolic link and the
6172 symbol is defined locally or was forced to be local because
6173 of a version file, we just want to emit a RELATIVE reloc.
6174 The entry in the global offset table will already have been
6175 initialized in the relocate_section function. */
6176 if (bfd_link_pic (info)
6177 && (h->root.type == bfd_link_hash_defined
6178 || h->root.type == bfd_link_hash_defweak)
6179 && SYMBOL_REFERENCES_LOCAL (info, h))
6181 if (htab->fdpic_p)
6183 asection *sec = h->root.u.def.section;
6184 int dynindx
6185 = elf_section_data (sec->output_section)->dynindx;
6187 rel.r_info = ELF32_R_INFO (dynindx, R_SH_DIR32);
6188 rel.r_addend = (h->root.u.def.value
6189 + h->root.u.def.section->output_offset);
6191 else
6193 rel.r_info = ELF32_R_INFO (0, R_SH_RELATIVE);
6194 rel.r_addend = (h->root.u.def.value
6195 + h->root.u.def.section->output_section->vma
6196 + h->root.u.def.section->output_offset);
6199 else
6201 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
6202 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_GLOB_DAT);
6203 rel.r_addend = 0;
6206 loc = srelgot->contents;
6207 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
6208 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6211 if (h->needs_copy)
6213 asection *s;
6214 Elf_Internal_Rela rel;
6215 bfd_byte *loc;
6217 /* This symbol needs a copy reloc. Set it up. */
6219 BFD_ASSERT (h->dynindx != -1
6220 && (h->root.type == bfd_link_hash_defined
6221 || h->root.type == bfd_link_hash_defweak));
6223 s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss");
6224 BFD_ASSERT (s != NULL);
6226 rel.r_offset = (h->root.u.def.value
6227 + h->root.u.def.section->output_section->vma
6228 + h->root.u.def.section->output_offset);
6229 rel.r_info = ELF32_R_INFO (h->dynindx, R_SH_COPY);
6230 rel.r_addend = 0;
6231 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
6232 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6235 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
6236 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
6237 ".got" section. */
6238 if (h == htab->root.hdynamic
6239 || (htab->root.target_os != is_vxworks && h == htab->root.hgot))
6240 sym->st_shndx = SHN_ABS;
6242 return true;
6245 /* Finish up the dynamic sections. */
6247 static bool
6248 sh_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
6250 struct elf_sh_link_hash_table *htab;
6251 asection *sgotplt;
6252 asection *sdyn;
6254 htab = sh_elf_hash_table (info);
6255 if (htab == NULL)
6256 return false;
6258 sgotplt = htab->root.sgotplt;
6259 sdyn = bfd_get_linker_section (htab->root.dynobj, ".dynamic");
6261 if (htab->root.dynamic_sections_created)
6263 asection *splt;
6264 Elf32_External_Dyn *dyncon, *dynconend;
6266 BFD_ASSERT (sgotplt != NULL && sdyn != NULL);
6268 dyncon = (Elf32_External_Dyn *) sdyn->contents;
6269 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6270 for (; dyncon < dynconend; dyncon++)
6272 Elf_Internal_Dyn dyn;
6273 asection *s;
6275 bfd_elf32_swap_dyn_in (htab->root.dynobj, dyncon, &dyn);
6277 switch (dyn.d_tag)
6279 default:
6280 if (htab->root.target_os == is_vxworks
6281 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
6282 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6283 break;
6285 case DT_PLTGOT:
6286 BFD_ASSERT (htab->root.hgot != NULL);
6287 s = htab->root.hgot->root.u.def.section;
6288 dyn.d_un.d_ptr = htab->root.hgot->root.u.def.value
6289 + s->output_section->vma + s->output_offset;
6290 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6291 break;
6293 case DT_JMPREL:
6294 s = htab->root.srelplt;
6295 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6296 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6297 break;
6299 case DT_PLTRELSZ:
6300 s = htab->root.srelplt;
6301 dyn.d_un.d_val = s->size;
6302 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6303 break;
6307 /* Fill in the first entry in the procedure linkage table. */
6308 splt = htab->root.splt;
6309 if (splt && splt->size > 0 && htab->plt_info->plt0_entry)
6311 unsigned int i;
6313 memcpy (splt->contents,
6314 htab->plt_info->plt0_entry,
6315 htab->plt_info->plt0_entry_size);
6316 for (i = 0; i < ARRAY_SIZE (htab->plt_info->plt0_got_fields); i++)
6317 if (htab->plt_info->plt0_got_fields[i] != MINUS_ONE)
6318 install_plt_field (output_bfd, false,
6319 (sgotplt->output_section->vma
6320 + sgotplt->output_offset
6321 + (i * 4)),
6322 (splt->contents
6323 + htab->plt_info->plt0_got_fields[i]));
6325 if (htab->root.target_os == is_vxworks)
6327 /* Finalize the .rela.plt.unloaded contents. */
6328 Elf_Internal_Rela rel;
6329 bfd_byte *loc;
6331 /* Create a .rela.plt.unloaded R_SH_DIR32 relocation for the
6332 first PLT entry's pointer to _GLOBAL_OFFSET_TABLE_ + 8. */
6333 loc = htab->srelplt2->contents;
6334 rel.r_offset = (splt->output_section->vma
6335 + splt->output_offset
6336 + htab->plt_info->plt0_got_fields[2]);
6337 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_SH_DIR32);
6338 rel.r_addend = 8;
6339 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
6340 loc += sizeof (Elf32_External_Rela);
6342 /* Fix up the remaining .rela.plt.unloaded relocations.
6343 They may have the wrong symbol index for _G_O_T_ or
6344 _P_L_T_ depending on the order in which symbols were
6345 output. */
6346 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
6348 /* The PLT entry's pointer to the .got.plt slot. */
6349 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
6350 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx,
6351 R_SH_DIR32);
6352 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6353 loc += sizeof (Elf32_External_Rela);
6355 /* The .got.plt slot's pointer to .plt. */
6356 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
6357 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx,
6358 R_SH_DIR32);
6359 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
6360 loc += sizeof (Elf32_External_Rela);
6364 /* UnixWare sets the entsize of .plt to 4, although that doesn't
6365 really seem like the right value. */
6366 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
6370 /* Fill in the first three entries in the global offset table. */
6371 if (sgotplt && sgotplt->size > 0 && !htab->fdpic_p)
6373 if (sdyn == NULL)
6374 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents);
6375 else
6376 bfd_put_32 (output_bfd,
6377 sdyn->output_section->vma + sdyn->output_offset,
6378 sgotplt->contents);
6379 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 4);
6380 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 8);
6383 if (sgotplt && sgotplt->size > 0)
6384 elf_section_data (sgotplt->output_section)->this_hdr.sh_entsize = 4;
6386 /* At the very end of the .rofixup section is a pointer to the GOT. */
6387 if (htab->fdpic_p && htab->srofixup != NULL)
6389 struct elf_link_hash_entry *hgot = htab->root.hgot;
6390 bfd_vma got_value = hgot->root.u.def.value
6391 + hgot->root.u.def.section->output_section->vma
6392 + hgot->root.u.def.section->output_offset;
6394 sh_elf_add_rofixup (output_bfd, htab->srofixup, got_value);
6396 /* Make sure we allocated and generated the same number of fixups. */
6397 BFD_ASSERT (htab->srofixup->reloc_count * 4 == htab->srofixup->size);
6400 if (htab->srelfuncdesc)
6401 BFD_ASSERT (htab->srelfuncdesc->reloc_count * sizeof (Elf32_External_Rela)
6402 == htab->srelfuncdesc->size);
6404 if (htab->root.srelgot)
6405 BFD_ASSERT (htab->root.srelgot->reloc_count * sizeof (Elf32_External_Rela)
6406 == htab->root.srelgot->size);
6408 return true;
6411 static enum elf_reloc_type_class
6412 sh_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
6413 const asection *rel_sec ATTRIBUTE_UNUSED,
6414 const Elf_Internal_Rela *rela)
6416 switch ((int) ELF32_R_TYPE (rela->r_info))
6418 case R_SH_RELATIVE:
6419 return reloc_class_relative;
6420 case R_SH_JMP_SLOT:
6421 return reloc_class_plt;
6422 case R_SH_COPY:
6423 return reloc_class_copy;
6424 default:
6425 return reloc_class_normal;
6429 #if !defined SH_TARGET_ALREADY_DEFINED
6430 /* Support for Linux core dump NOTE sections. */
6432 static bool
6433 elf32_shlin_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
6435 int offset;
6436 unsigned int size;
6438 switch (note->descsz)
6440 default:
6441 return false;
6443 case 168: /* Linux/SH */
6444 /* pr_cursig */
6445 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
6447 /* pr_pid */
6448 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
6450 /* pr_reg */
6451 offset = 72;
6452 size = 92;
6454 break;
6457 /* Make a ".reg/999" section. */
6458 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
6459 size, note->descpos + offset);
6462 static bool
6463 elf32_shlin_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
6465 switch (note->descsz)
6467 default:
6468 return false;
6470 case 124: /* Linux/SH elf_prpsinfo */
6471 elf_tdata (abfd)->core->program
6472 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
6473 elf_tdata (abfd)->core->command
6474 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
6477 /* Note that for some reason, a spurious space is tacked
6478 onto the end of the args in some (at least one anyway)
6479 implementations, so strip it off if it exists. */
6482 char *command = elf_tdata (abfd)->core->command;
6483 int n = strlen (command);
6485 if (0 < n && command[n - 1] == ' ')
6486 command[n - 1] = '\0';
6489 return true;
6491 #endif /* not SH_TARGET_ALREADY_DEFINED */
6494 /* Return address for Ith PLT stub in section PLT, for relocation REL
6495 or (bfd_vma) -1 if it should not be included. */
6497 static bfd_vma
6498 sh_elf_plt_sym_val (bfd_vma i, const asection *plt,
6499 const arelent *rel ATTRIBUTE_UNUSED)
6501 const struct elf_sh_plt_info *plt_info;
6503 plt_info = get_plt_info (plt->owner, (plt->owner->flags & DYNAMIC) != 0);
6504 return plt->vma + get_plt_offset (plt_info, i);
6507 /* Decide whether to attempt to turn absptr or lsda encodings in
6508 shared libraries into pcrel within the given input section. */
6510 static bool
6511 sh_elf_use_relative_eh_frame (bfd *input_bfd ATTRIBUTE_UNUSED,
6512 struct bfd_link_info *info,
6513 asection *eh_frame_section ATTRIBUTE_UNUSED)
6515 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
6517 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
6518 if (htab->fdpic_p)
6519 return false;
6521 return true;
6524 /* Adjust the contents of an eh_frame_hdr section before they're output. */
6526 static bfd_byte
6527 sh_elf_encode_eh_address (bfd *abfd,
6528 struct bfd_link_info *info,
6529 asection *osec, bfd_vma offset,
6530 asection *loc_sec, bfd_vma loc_offset,
6531 bfd_vma *encoded)
6533 struct elf_sh_link_hash_table *htab = sh_elf_hash_table (info);
6534 struct elf_link_hash_entry *h;
6536 if (!htab->fdpic_p)
6537 return _bfd_elf_encode_eh_address (abfd, info, osec, offset, loc_sec,
6538 loc_offset, encoded);
6540 h = htab->root.hgot;
6541 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined);
6543 if (! h || (sh_elf_osec_to_segment (abfd, osec)
6544 == sh_elf_osec_to_segment (abfd, loc_sec->output_section)))
6545 return _bfd_elf_encode_eh_address (abfd, info, osec, offset,
6546 loc_sec, loc_offset, encoded);
6548 BFD_ASSERT (sh_elf_osec_to_segment (abfd, osec)
6549 == (sh_elf_osec_to_segment
6550 (abfd, h->root.u.def.section->output_section)));
6552 *encoded = osec->vma + offset
6553 - (h->root.u.def.value
6554 + h->root.u.def.section->output_section->vma
6555 + h->root.u.def.section->output_offset);
6557 return DW_EH_PE_datarel | DW_EH_PE_sdata4;
6560 #if !defined SH_TARGET_ALREADY_DEFINED
6561 #define TARGET_BIG_SYM sh_elf32_vec
6562 #define TARGET_BIG_NAME "elf32-sh"
6563 #define TARGET_LITTLE_SYM sh_elf32_le_vec
6564 #define TARGET_LITTLE_NAME "elf32-shl"
6565 #endif
6567 #define ELF_ARCH bfd_arch_sh
6568 #define ELF_TARGET_ID SH_ELF_DATA
6569 #define ELF_MACHINE_CODE EM_SH
6570 #ifdef __QNXTARGET__
6571 #define ELF_MAXPAGESIZE 0x1000
6572 #else
6573 #define ELF_MAXPAGESIZE 0x80
6574 #endif
6576 #define elf_symbol_leading_char '_'
6578 #define bfd_elf32_bfd_reloc_type_lookup sh_elf_reloc_type_lookup
6579 #define bfd_elf32_bfd_reloc_name_lookup \
6580 sh_elf_reloc_name_lookup
6581 #define elf_info_to_howto sh_elf_info_to_howto
6582 #define bfd_elf32_bfd_relax_section sh_elf_relax_section
6583 #define elf_backend_relocate_section sh_elf_relocate_section
6584 #define bfd_elf32_bfd_get_relocated_section_contents \
6585 sh_elf_get_relocated_section_contents
6586 #define bfd_elf32_mkobject sh_elf_mkobject
6587 #define elf_backend_object_p sh_elf_object_p
6588 #define bfd_elf32_bfd_copy_private_bfd_data \
6589 sh_elf_copy_private_data
6590 #define bfd_elf32_bfd_merge_private_bfd_data \
6591 sh_elf_merge_private_data
6593 #define elf_backend_gc_mark_hook sh_elf_gc_mark_hook
6594 #define elf_backend_check_relocs sh_elf_check_relocs
6595 #define elf_backend_copy_indirect_symbol \
6596 sh_elf_copy_indirect_symbol
6597 #define elf_backend_create_dynamic_sections \
6598 sh_elf_create_dynamic_sections
6599 #define bfd_elf32_bfd_link_hash_table_create \
6600 sh_elf_link_hash_table_create
6601 #define elf_backend_adjust_dynamic_symbol \
6602 sh_elf_adjust_dynamic_symbol
6603 #define elf_backend_always_size_sections \
6604 sh_elf_always_size_sections
6605 #define elf_backend_size_dynamic_sections \
6606 sh_elf_size_dynamic_sections
6607 #define elf_backend_omit_section_dynsym sh_elf_omit_section_dynsym
6608 #define elf_backend_finish_dynamic_symbol \
6609 sh_elf_finish_dynamic_symbol
6610 #define elf_backend_finish_dynamic_sections \
6611 sh_elf_finish_dynamic_sections
6612 #define elf_backend_reloc_type_class sh_elf_reloc_type_class
6613 #define elf_backend_plt_sym_val sh_elf_plt_sym_val
6614 #define elf_backend_can_make_relative_eh_frame \
6615 sh_elf_use_relative_eh_frame
6616 #define elf_backend_can_make_lsda_relative_eh_frame \
6617 sh_elf_use_relative_eh_frame
6618 #define elf_backend_encode_eh_address \
6619 sh_elf_encode_eh_address
6621 #define elf_backend_stack_align 8
6622 #define elf_backend_can_gc_sections 1
6623 #define elf_backend_can_refcount 1
6624 #define elf_backend_want_got_plt 1
6625 #define elf_backend_plt_readonly 1
6626 #define elf_backend_want_plt_sym 0
6627 #define elf_backend_got_header_size 12
6628 #define elf_backend_dtrel_excludes_plt 1
6630 #define elf_backend_linux_prpsinfo32_ugid16 true
6632 #if !defined SH_TARGET_ALREADY_DEFINED
6634 #include "elf32-target.h"
6636 /* NetBSD support. */
6637 #undef TARGET_BIG_SYM
6638 #define TARGET_BIG_SYM sh_elf32_nbsd_vec
6639 #undef TARGET_BIG_NAME
6640 #define TARGET_BIG_NAME "elf32-sh-nbsd"
6641 #undef TARGET_LITTLE_SYM
6642 #define TARGET_LITTLE_SYM sh_elf32_nbsd_le_vec
6643 #undef TARGET_LITTLE_NAME
6644 #define TARGET_LITTLE_NAME "elf32-shl-nbsd"
6645 #undef ELF_MAXPAGESIZE
6646 #define ELF_MAXPAGESIZE 0x10000
6647 #undef ELF_COMMONPAGESIZE
6648 #undef elf_symbol_leading_char
6649 #define elf_symbol_leading_char 0
6650 #undef elf32_bed
6651 #define elf32_bed elf32_sh_nbsd_bed
6653 #include "elf32-target.h"
6656 /* Linux support. */
6657 #undef TARGET_BIG_SYM
6658 #define TARGET_BIG_SYM sh_elf32_linux_be_vec
6659 #undef TARGET_BIG_NAME
6660 #define TARGET_BIG_NAME "elf32-shbig-linux"
6661 #undef TARGET_LITTLE_SYM
6662 #define TARGET_LITTLE_SYM sh_elf32_linux_vec
6663 #undef TARGET_LITTLE_NAME
6664 #define TARGET_LITTLE_NAME "elf32-sh-linux"
6665 #undef ELF_COMMONPAGESIZE
6666 #define ELF_COMMONPAGESIZE 0x1000
6668 #undef elf_backend_grok_prstatus
6669 #define elf_backend_grok_prstatus elf32_shlin_grok_prstatus
6670 #undef elf_backend_grok_psinfo
6671 #define elf_backend_grok_psinfo elf32_shlin_grok_psinfo
6672 #undef elf32_bed
6673 #define elf32_bed elf32_sh_lin_bed
6675 #include "elf32-target.h"
6678 /* FDPIC support. */
6679 #undef TARGET_BIG_SYM
6680 #define TARGET_BIG_SYM sh_elf32_fdpic_be_vec
6681 #undef TARGET_BIG_NAME
6682 #define TARGET_BIG_NAME "elf32-shbig-fdpic"
6683 #undef TARGET_LITTLE_SYM
6684 #define TARGET_LITTLE_SYM sh_elf32_fdpic_le_vec
6685 #undef TARGET_LITTLE_NAME
6686 #define TARGET_LITTLE_NAME "elf32-sh-fdpic"
6688 #undef elf32_bed
6689 #define elf32_bed elf32_sh_fd_bed
6691 #include "elf32-target.h"
6693 /* VxWorks support. */
6694 #undef TARGET_BIG_SYM
6695 #define TARGET_BIG_SYM sh_elf32_vxworks_vec
6696 #undef TARGET_BIG_NAME
6697 #define TARGET_BIG_NAME "elf32-sh-vxworks"
6698 #undef TARGET_LITTLE_SYM
6699 #define TARGET_LITTLE_SYM sh_elf32_vxworks_le_vec
6700 #undef TARGET_LITTLE_NAME
6701 #define TARGET_LITTLE_NAME "elf32-shl-vxworks"
6702 #undef elf32_bed
6703 #define elf32_bed elf32_sh_vxworks_bed
6705 #undef elf_backend_want_plt_sym
6706 #define elf_backend_want_plt_sym 1
6707 #undef elf_symbol_leading_char
6708 #define elf_symbol_leading_char '_'
6709 #define elf_backend_want_got_underscore 1
6710 #undef elf_backend_grok_prstatus
6711 #undef elf_backend_grok_psinfo
6712 #undef elf_backend_add_symbol_hook
6713 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
6714 #undef elf_backend_link_output_symbol_hook
6715 #define elf_backend_link_output_symbol_hook \
6716 elf_vxworks_link_output_symbol_hook
6717 #undef elf_backend_emit_relocs
6718 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
6719 #undef elf_backend_final_write_processing
6720 #define elf_backend_final_write_processing \
6721 elf_vxworks_final_write_processing
6722 #undef ELF_MAXPAGESIZE
6723 #define ELF_MAXPAGESIZE 0x1000
6724 #undef ELF_COMMONPAGESIZE
6726 #undef ELF_TARGET_OS
6727 #define ELF_TARGET_OS is_vxworks
6729 #include "elf32-target.h"
6731 #endif /* not SH_TARGET_ALREADY_DEFINED */